ExactCalculator: Drop support for small DPI displays

Change-Id: I70f1770bc4d087166bddb3ac8652012e14885329
diff --git a/res/values-w230dp-h275dp/dimens.xml b/res/values-w230dp-h275dp/dimens.xml
deleted file mode 100644
index 7f8bf5e..0000000
--- a/res/values-w230dp-h275dp/dimens.xml
+++ /dev/null
@@ -1,34 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<!--
-  Copyright (C) 2016 The Android Open Source Project
-
-  Licensed under the Apache License, Version 2.0 (the "License");
-  you may not use this file except in compliance with the License.
-  You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-  Unless required by applicable law or agreed to in writing, software
-  distributed under the License is distributed on an "AS IS" BASIS,
-  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  See the License for the specific language governing permissions and
-  limitations under the License.
-  -->
-
-<resources>
-    <!-- Dimens for display formula. -->
-    <dimen name="formula_padding_top">0dip</dimen>
-    <dimen name="formula_padding_bottom">8dip</dimen>
-    <dimen name="formula_padding_start">16dip</dimen>
-    <dimen name="formula_padding_end">16dip</dimen>
-    <dimen name="formula_min_textsize">28dip</dimen>
-    <dimen name="formula_max_textsize">28dip</dimen>
-    <dimen name="formula_step_textsize">8dip</dimen>
-
-    <!-- Dimens for display result. -->
-    <dimen name="result_padding_top">0dip</dimen>
-    <dimen name="result_padding_bottom">8dip</dimen>
-    <dimen name="result_padding_start">16dip</dimen>
-    <dimen name="result_padding_end">16dip</dimen>
-    <dimen name="result_textsize">28dip</dimen>
-</resources>
diff --git a/res/values-w230dp-h275dp/layout.xml b/res/values-w230dp-h275dp/layout.xml
deleted file mode 100644
index f9a2d97..0000000
--- a/res/values-w230dp-h275dp/layout.xml
+++ /dev/null
@@ -1,23 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<!--
-  Copyright (C) 2016 The Android Open Source Project
-
-  Licensed under the Apache License, Version 2.0 (the "License");
-  you may not use this file except in compliance with the License.
-  You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-  Unless required by applicable law or agreed to in writing, software
-  distributed under the License is distributed on an "AS IS" BASIS,
-  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  See the License for the specific language governing permissions and
-  limitations under the License.
-  -->
-
-<resources>
-    <item name="activity_calculator" type="layout">@layout/activity_calculator_port</item>
-    <item name="display" type="layout">@layout/display_two_line</item>
-    <item name="pad_operator" type="layout">@layout/pad_operator_one_col</item>
-    <item name="pad_advanced" type="layout">@layout/pad_advanced_4x4</item>
-</resources>
diff --git a/res/values-w230dp-h275dp/styles.xml b/res/values-w230dp-h275dp/styles.xml
deleted file mode 100644
index ae3b971..0000000
--- a/res/values-w230dp-h275dp/styles.xml
+++ /dev/null
@@ -1,74 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<!--
-  Copyright (C) 2016 The Android Open Source Project
-
-  Licensed under the Apache License, Version 2.0 (the "License");
-  you may not use this file except in compliance with the License.
-  You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-  Unless required by applicable law or agreed to in writing, software
-  distributed under the License is distributed on an "AS IS" BASIS,
-  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  See the License for the specific language governing permissions and
-  limitations under the License.
-  -->
-
-<resources xmlns:android="http://schemas.android.com/apk/res/android">
-
-    <style name="PadButtonStyle.Advanced">
-        <item name="background">@drawable/pad_button_advanced_background</item>
-        <item name="android:textColor">@color/pad_button_advanced_text_color</item>
-        <item name="android:textSize">16dip</item>
-    </style>
-
-    <style name="PadButtonStyle.Advanced.Text">
-        <item name="textAllCaps">true</item>
-        <item name="android:textSize">14dip</item>
-    </style>
-
-    <style name="PadButtonStyle.Numeric">
-        <item name="android:textSize">18dip</item>
-    </style>
-
-    <style name="PadButtonStyle.Numeric.Equals">
-        <item name="android:visibility">visible</item>
-    </style>
-
-    <style name="PadButtonStyle.Operator">
-        <item name="android:textSize">16dip</item>
-    </style>
-
-    <style name="PadButtonStyle.Operator.Text">
-        <item name="textAllCaps">true</item>
-        <item name="android:textSize">14dip</item>
-    </style>
-
-    <style name="PadLayoutStyle.Advanced">
-        <item name="elevation">4dip</item>
-        <item name="android:paddingTop">2dip</item>
-        <item name="android:paddingBottom">8dip</item>
-        <item name="android:paddingStart">18dip</item>
-        <item name="android:paddingEnd">18dip</item>
-    </style>
-
-    <style name="PadLayoutStyle.Numeric">
-        <item name="android:layout_width">0dip</item>
-        <item name="android:layout_weight">7</item>
-        <item name="android:paddingTop">2dip</item>
-        <item name="android:paddingBottom">8dip</item>
-        <item name="android:paddingStart">8dip</item>
-        <item name="android:paddingEnd">8dip</item>
-    </style>
-
-    <style name="PadLayoutStyle.Operator">
-        <item name="android:layout_width">0dip</item>
-        <item name="android:layout_weight">3</item>
-        <item name="android:paddingTop">2dip</item>
-        <item name="android:paddingBottom">8dip</item>
-        <item name="android:paddingStart">4dip</item>
-        <item name="android:paddingEnd">28dip</item>
-    </style>
-
-</resources>
diff --git a/res/values-w230dp-h375dp/dimens.xml b/res/values-w230dp-h375dp/dimens.xml
deleted file mode 100644
index a747231..0000000
--- a/res/values-w230dp-h375dp/dimens.xml
+++ /dev/null
@@ -1,34 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<!--
-  Copyright (C) 2016 The Android Open Source Project
-
-  Licensed under the Apache License, Version 2.0 (the "License");
-  you may not use this file except in compliance with the License.
-  You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-  Unless required by applicable law or agreed to in writing, software
-  distributed under the License is distributed on an "AS IS" BASIS,
-  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  See the License for the specific language governing permissions and
-  limitations under the License.
-  -->
-
-<resources>
-    <!-- Dimens for display formula. -->
-    <dimen name="formula_padding_top">2dip</dimen>
-    <dimen name="formula_padding_bottom">10dip</dimen>
-    <dimen name="formula_padding_start">16dip</dimen>
-    <dimen name="formula_padding_end">16dip</dimen>
-    <dimen name="formula_min_textsize">32dip</dimen>
-    <dimen name="formula_max_textsize">32dip</dimen>
-    <dimen name="formula_step_textsize">8dip</dimen>
-
-    <!-- Dimens for display result. -->
-    <dimen name="result_padding_top">12dip</dimen>
-    <dimen name="result_padding_bottom">18dip</dimen>
-    <dimen name="result_padding_start">16dip</dimen>
-    <dimen name="result_padding_end">16dip</dimen>
-    <dimen name="result_textsize">32dip</dimen>
-</resources>
\ No newline at end of file
diff --git a/res/values-w230dp-h375dp/layout.xml b/res/values-w230dp-h375dp/layout.xml
deleted file mode 100644
index f9a2d97..0000000
--- a/res/values-w230dp-h375dp/layout.xml
+++ /dev/null
@@ -1,23 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<!--
-  Copyright (C) 2016 The Android Open Source Project
-
-  Licensed under the Apache License, Version 2.0 (the "License");
-  you may not use this file except in compliance with the License.
-  You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-  Unless required by applicable law or agreed to in writing, software
-  distributed under the License is distributed on an "AS IS" BASIS,
-  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  See the License for the specific language governing permissions and
-  limitations under the License.
-  -->
-
-<resources>
-    <item name="activity_calculator" type="layout">@layout/activity_calculator_port</item>
-    <item name="display" type="layout">@layout/display_two_line</item>
-    <item name="pad_operator" type="layout">@layout/pad_operator_one_col</item>
-    <item name="pad_advanced" type="layout">@layout/pad_advanced_4x4</item>
-</resources>
diff --git a/res/values-w230dp-h375dp/styles.xml b/res/values-w230dp-h375dp/styles.xml
deleted file mode 100644
index 412c736..0000000
--- a/res/values-w230dp-h375dp/styles.xml
+++ /dev/null
@@ -1,74 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<!--
-  Copyright (C) 2016 The Android Open Source Project
-
-  Licensed under the Apache License, Version 2.0 (the "License");
-  you may not use this file except in compliance with the License.
-  You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-  Unless required by applicable law or agreed to in writing, software
-  distributed under the License is distributed on an "AS IS" BASIS,
-  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  See the License for the specific language governing permissions and
-  limitations under the License.
-  -->
-
-<resources xmlns:android="http://schemas.android.com/apk/res/android">
-
-    <style name="PadButtonStyle.Advanced">
-        <item name="background">@drawable/pad_button_advanced_background</item>
-        <item name="android:textColor">@color/pad_button_advanced_text_color</item>
-        <item name="android:textSize">17dip</item>
-    </style>
-
-    <style name="PadButtonStyle.Advanced.Text">
-        <item name="textAllCaps">true</item>
-        <item name="android:textSize">15dip</item>
-    </style>
-
-    <style name="PadButtonStyle.Numeric">
-        <item name="android:textSize">27dip</item>
-    </style>
-
-    <style name="PadButtonStyle.Numeric.Equals">
-        <item name="android:visibility">visible</item>
-    </style>
-
-    <style name="PadButtonStyle.Operator">
-        <item name="android:textSize">24dip</item>
-    </style>
-
-    <style name="PadButtonStyle.Operator.Text">
-        <item name="textAllCaps">true</item>
-        <item name="android:textSize">15dip</item>
-    </style>
-
-    <style name="PadLayoutStyle.Advanced">
-        <item name="elevation">4dip</item>
-        <item name="android:paddingTop">2dip</item>
-        <item name="android:paddingBottom">8dip</item>
-        <item name="android:paddingStart">18dip</item>
-        <item name="android:paddingEnd">18dip</item>
-    </style>
-
-    <style name="PadLayoutStyle.Numeric">
-        <item name="android:layout_width">0dip</item>
-        <item name="android:layout_weight">7</item>
-        <item name="android:paddingTop">2dip</item>
-        <item name="android:paddingBottom">8dip</item>
-        <item name="android:paddingStart">8dip</item>
-        <item name="android:paddingEnd">8dip</item>
-    </style>
-
-    <style name="PadLayoutStyle.Operator">
-        <item name="android:layout_width">0dip</item>
-        <item name="android:layout_weight">3</item>
-        <item name="android:paddingTop">2dip</item>
-        <item name="android:paddingBottom">8dip</item>
-        <item name="android:paddingStart">4dip</item>
-        <item name="android:paddingEnd">28dip</item>
-    </style>
-
-</resources>
diff --git a/res/values-w230dp-h475dp-port/dimens.xml b/res/values-w230dp-h475dp-port/dimens.xml
deleted file mode 100644
index 072a06e..0000000
--- a/res/values-w230dp-h475dp-port/dimens.xml
+++ /dev/null
@@ -1,34 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<!--
-  Copyright (C) 2016 The Android Open Source Project
-
-  Licensed under the Apache License, Version 2.0 (the "License");
-  you may not use this file except in compliance with the License.
-  You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-  Unless required by applicable law or agreed to in writing, software
-  distributed under the License is distributed on an "AS IS" BASIS,
-  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  See the License for the specific language governing permissions and
-  limitations under the License.
-  -->
-
-<resources>
-    <!-- Dimens for display formula. -->
-    <dimen name="formula_padding_top">8dip</dimen>
-    <dimen name="formula_padding_bottom">18dip</dimen>
-    <dimen name="formula_padding_start">16dip</dimen>
-    <dimen name="formula_padding_end">16dip</dimen>
-    <dimen name="formula_min_textsize">32dip</dimen>
-    <dimen name="formula_max_textsize">56dip</dimen>
-    <dimen name="formula_step_textsize">8dip</dimen>
-
-    <!-- Dimens for display result. -->
-    <dimen name="result_padding_top">18dip</dimen>
-    <dimen name="result_padding_bottom">36dip</dimen>
-    <dimen name="result_padding_start">16dip</dimen>
-    <dimen name="result_padding_end">16dip</dimen>
-    <dimen name="result_textsize">32dip</dimen>
-</resources>
\ No newline at end of file
diff --git a/res/values-w230dp-h475dp-port/layout.xml b/res/values-w230dp-h475dp-port/layout.xml
deleted file mode 100644
index 9f7bd6b..0000000
--- a/res/values-w230dp-h475dp-port/layout.xml
+++ /dev/null
@@ -1,23 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<!--
-  Copyright (C) 2016 The Android Open Source Project
-
-  Licensed under the Apache License, Version 2.0 (the "License");
-  you may not use this file except in compliance with the License.
-  You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-  Unless required by applicable law or agreed to in writing, software
-  distributed under the License is distributed on an "AS IS" BASIS,
-  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  See the License for the specific language governing permissions and
-  limitations under the License.
-  -->
-
-<resources>
-    <item name="activity_calculator" type="layout">@layout/activity_calculator_port</item>
-    <item name="display" type="layout">@layout/display_two_line</item>
-    <item name="pad_operator" type="layout">@layout/pad_operator_one_col</item>
-    <item name="pad_advanced" type="layout">@layout/pad_advanced_3x5</item>
-</resources>
diff --git a/res/values-w230dp-h475dp-port/styles.xml b/res/values-w230dp-h475dp-port/styles.xml
deleted file mode 100644
index da149ae..0000000
--- a/res/values-w230dp-h475dp-port/styles.xml
+++ /dev/null
@@ -1,74 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<!--
-  Copyright (C) 2016 The Android Open Source Project
-
-  Licensed under the Apache License, Version 2.0 (the "License");
-  you may not use this file except in compliance with the License.
-  You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-  Unless required by applicable law or agreed to in writing, software
-  distributed under the License is distributed on an "AS IS" BASIS,
-  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  See the License for the specific language governing permissions and
-  limitations under the License.
-  -->
-
-<resources xmlns:android="http://schemas.android.com/apk/res/android">
-
-    <style name="PadButtonStyle.Advanced">
-        <item name="background">@drawable/pad_button_advanced_background</item>
-        <item name="android:textColor">@color/pad_button_advanced_text_color</item>
-        <item name="android:textSize">20dip</item>
-    </style>
-
-    <style name="PadButtonStyle.Advanced.Text">
-        <item name="textAllCaps">true</item>
-        <item name="android:textSize">17dip</item>
-    </style>
-
-    <style name="PadButtonStyle.Numeric">
-        <item name="android:textSize">32dip</item>
-    </style>
-
-    <style name="PadButtonStyle.Numeric.Equals">
-        <item name="android:visibility">visible</item>
-    </style>
-
-    <style name="PadButtonStyle.Operator">
-        <item name="android:textSize">23dip</item>
-    </style>
-
-    <style name="PadButtonStyle.Operator.Text">
-        <item name="textAllCaps">true</item>
-        <item name="android:textSize">17dip</item>
-    </style>
-
-    <style name="PadLayoutStyle.Advanced">
-        <item name="elevation">4dip</item>
-        <item name="android:paddingTop">12dip</item>
-        <item name="android:paddingBottom">20dip</item>
-        <item name="android:paddingStart">18dip</item>
-        <item name="android:paddingEnd">18dip</item>
-    </style>
-
-    <style name="PadLayoutStyle.Numeric">
-        <item name="android:layout_width">0dip</item>
-        <item name="android:layout_weight">7</item>
-        <item name="android:paddingTop">12dip</item>
-        <item name="android:paddingBottom">20dip</item>
-        <item name="android:paddingStart">8dip</item>
-        <item name="android:paddingEnd">8dip</item>
-    </style>
-
-    <style name="PadLayoutStyle.Operator">
-        <item name="android:layout_width">0dip</item>
-        <item name="android:layout_weight">3</item>
-        <item name="android:paddingTop">8dip</item>
-        <item name="android:paddingBottom">24dip</item>
-        <item name="android:paddingStart">4dip</item>
-        <item name="android:paddingEnd">28dip</item>
-    </style>
-
-</resources>
diff --git a/res/values-w375dp-h220dp/dimens.xml b/res/values-w375dp-h220dp/dimens.xml
deleted file mode 100644
index 10a6c21..0000000
--- a/res/values-w375dp-h220dp/dimens.xml
+++ /dev/null
@@ -1,34 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<!--
-  Copyright (C) 2016 The Android Open Source Project
-
-  Licensed under the Apache License, Version 2.0 (the "License");
-  you may not use this file except in compliance with the License.
-  You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-  Unless required by applicable law or agreed to in writing, software
-  distributed under the License is distributed on an "AS IS" BASIS,
-  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  See the License for the specific language governing permissions and
-  limitations under the License.
-  -->
-
-<resources>
-    <!-- Dimens for display formula. -->
-    <dimen name="formula_padding_top">0dip</dimen>
-    <dimen name="formula_padding_bottom">8dip</dimen>
-    <dimen name="formula_padding_start">16dip</dimen>
-    <dimen name="formula_padding_end">16dip</dimen>
-    <dimen name="formula_min_textsize">28dip</dimen>
-    <dimen name="formula_max_textsize">28dip</dimen>
-    <dimen name="formula_step_textsize">8dip</dimen>
-
-    <!-- Dimens for display result. -->
-    <dimen name="result_padding_top">0dip</dimen>
-    <dimen name="result_padding_bottom">8dip</dimen>
-    <dimen name="result_padding_start">16dip</dimen>
-    <dimen name="result_padding_end">16dip</dimen>
-    <dimen name="result_textsize">28dip</dimen>
-</resources>
\ No newline at end of file
diff --git a/res/values-w375dp-h220dp/layout.xml b/res/values-w375dp-h220dp/layout.xml
deleted file mode 100644
index ac4cde8..0000000
--- a/res/values-w375dp-h220dp/layout.xml
+++ /dev/null
@@ -1,23 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<!--
-  Copyright (C) 2016 The Android Open Source Project
-
-  Licensed under the Apache License, Version 2.0 (the "License");
-  you may not use this file except in compliance with the License.
-  You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-  Unless required by applicable law or agreed to in writing, software
-  distributed under the License is distributed on an "AS IS" BASIS,
-  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  See the License for the specific language governing permissions and
-  limitations under the License.
-  -->
-
-<resources>
-    <item name="activity_calculator" type="layout">@layout/activity_calculator_port</item>
-    <item name="display" type="layout">@layout/display_one_line</item>
-    <item name="pad_operator" type="layout">@layout/pad_operator_two_col</item>
-    <item name="pad_advanced" type="layout">@layout/pad_advanced_4x4</item>
-</resources>
diff --git a/res/values-w375dp-h220dp/styles.xml b/res/values-w375dp-h220dp/styles.xml
deleted file mode 100644
index 500d54e..0000000
--- a/res/values-w375dp-h220dp/styles.xml
+++ /dev/null
@@ -1,74 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<!--
-  Copyright (C) 2016 The Android Open Source Project
-
-  Licensed under the Apache License, Version 2.0 (the "License");
-  you may not use this file except in compliance with the License.
-  You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-  Unless required by applicable law or agreed to in writing, software
-  distributed under the License is distributed on an "AS IS" BASIS,
-  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  See the License for the specific language governing permissions and
-  limitations under the License.
-  -->
-
-<resources xmlns:android="http://schemas.android.com/apk/res/android">
-
-    <style name="PadButtonStyle.Advanced">
-        <item name="background">@drawable/pad_button_advanced_background</item>
-        <item name="android:textColor">@color/pad_button_advanced_text_color</item>
-        <item name="android:textSize">14dip</item>
-    </style>
-
-    <style name="PadButtonStyle.Advanced.Text">
-        <item name="textAllCaps">true</item>
-        <item name="android:textSize">12dip</item>
-    </style>
-
-    <style name="PadButtonStyle.Numeric">
-        <item name="android:textSize">16dip</item>
-    </style>
-
-    <style name="PadButtonStyle.Numeric.Equals">
-        <item name="android:visibility">gone</item>
-    </style>
-
-    <style name="PadButtonStyle.Operator">
-        <item name="android:textSize">14dip</item>
-    </style>
-
-    <style name="PadButtonStyle.Operator.Text">
-        <item name="textAllCaps">true</item>
-        <item name="android:textSize">12dip</item>
-    </style>
-
-    <style name="PadLayoutStyle.Advanced">
-        <item name="elevation">4dip</item>
-        <item name="android:paddingTop">2dip</item>
-        <item name="android:paddingBottom">8dip</item>
-        <item name="android:paddingStart">20dip</item>
-        <item name="android:paddingEnd">20dip</item>
-    </style>
-
-    <style name="PadLayoutStyle.Numeric">
-        <item name="android:layout_width">0dip</item>
-        <item name="android:layout_weight">5</item>
-        <item name="android:paddingTop">2dip</item>
-        <item name="android:paddingBottom">8dip</item>
-        <item name="android:paddingStart">8dip</item>
-        <item name="android:paddingEnd">8dip</item>
-    </style>
-
-    <style name="PadLayoutStyle.Operator">
-        <item name="android:layout_width">0dip</item>
-        <item name="android:layout_weight">3</item>
-        <item name="android:paddingTop">2dip</item>
-        <item name="android:paddingBottom">8dip</item>
-        <item name="android:paddingStart">4dip</item>
-        <item name="android:paddingEnd">28dip</item>
-    </style>
-
-</resources>
diff --git a/res/values-w375dp-h275dp/dimens.xml b/res/values-w375dp-h275dp/dimens.xml
deleted file mode 100644
index 10a6c21..0000000
--- a/res/values-w375dp-h275dp/dimens.xml
+++ /dev/null
@@ -1,34 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<!--
-  Copyright (C) 2016 The Android Open Source Project
-
-  Licensed under the Apache License, Version 2.0 (the "License");
-  you may not use this file except in compliance with the License.
-  You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-  Unless required by applicable law or agreed to in writing, software
-  distributed under the License is distributed on an "AS IS" BASIS,
-  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  See the License for the specific language governing permissions and
-  limitations under the License.
-  -->
-
-<resources>
-    <!-- Dimens for display formula. -->
-    <dimen name="formula_padding_top">0dip</dimen>
-    <dimen name="formula_padding_bottom">8dip</dimen>
-    <dimen name="formula_padding_start">16dip</dimen>
-    <dimen name="formula_padding_end">16dip</dimen>
-    <dimen name="formula_min_textsize">28dip</dimen>
-    <dimen name="formula_max_textsize">28dip</dimen>
-    <dimen name="formula_step_textsize">8dip</dimen>
-
-    <!-- Dimens for display result. -->
-    <dimen name="result_padding_top">0dip</dimen>
-    <dimen name="result_padding_bottom">8dip</dimen>
-    <dimen name="result_padding_start">16dip</dimen>
-    <dimen name="result_padding_end">16dip</dimen>
-    <dimen name="result_textsize">28dip</dimen>
-</resources>
\ No newline at end of file
diff --git a/res/values-w375dp-h275dp/layout.xml b/res/values-w375dp-h275dp/layout.xml
deleted file mode 100644
index 3890667..0000000
--- a/res/values-w375dp-h275dp/layout.xml
+++ /dev/null
@@ -1,23 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<!--
-  Copyright (C) 2016 The Android Open Source Project
-
-  Licensed under the Apache License, Version 2.0 (the "License");
-  you may not use this file except in compliance with the License.
-  You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-  Unless required by applicable law or agreed to in writing, software
-  distributed under the License is distributed on an "AS IS" BASIS,
-  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  See the License for the specific language governing permissions and
-  limitations under the License.
-  -->
-
-<resources>
-    <item name="activity_calculator" type="layout">@layout/activity_calculator_port</item>
-    <item name="display" type="layout">@layout/display_two_line</item>
-    <item name="pad_operator" type="layout">@layout/pad_operator_two_col</item>
-    <item name="pad_advanced" type="layout">@layout/pad_advanced_4x4</item>
-</resources>
diff --git a/res/values-w375dp-h275dp/styles.xml b/res/values-w375dp-h275dp/styles.xml
deleted file mode 100644
index eced6fc..0000000
--- a/res/values-w375dp-h275dp/styles.xml
+++ /dev/null
@@ -1,74 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<!--
-  Copyright (C) 2016 The Android Open Source Project
-
-  Licensed under the Apache License, Version 2.0 (the "License");
-  you may not use this file except in compliance with the License.
-  You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-  Unless required by applicable law or agreed to in writing, software
-  distributed under the License is distributed on an "AS IS" BASIS,
-  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  See the License for the specific language governing permissions and
-  limitations under the License.
-  -->
-
-<resources xmlns:android="http://schemas.android.com/apk/res/android">
-
-    <style name="PadButtonStyle.Advanced">
-        <item name="background">@drawable/pad_button_advanced_background</item>
-        <item name="android:textColor">@color/pad_button_advanced_text_color</item>
-        <item name="android:textSize">17dip</item>
-    </style>
-
-    <style name="PadButtonStyle.Advanced.Text">
-        <item name="textAllCaps">true</item>
-        <item name="android:textSize">14dip</item>
-    </style>
-
-    <style name="PadButtonStyle.Numeric">
-        <item name="android:textSize">20dip</item>
-    </style>
-
-    <style name="PadButtonStyle.Numeric.Equals">
-        <item name="android:visibility">gone</item>
-    </style>
-
-    <style name="PadButtonStyle.Operator">
-        <item name="android:textSize">17dip</item>
-    </style>
-
-    <style name="PadButtonStyle.Operator.Text">
-        <item name="textAllCaps">true</item>
-        <item name="android:textSize">14dip</item>
-    </style>
-
-    <style name="PadLayoutStyle.Advanced">
-        <item name="elevation">4dip</item>
-        <item name="android:paddingTop">2dip</item>
-        <item name="android:paddingBottom">8dip</item>
-        <item name="android:paddingStart">20dip</item>
-        <item name="android:paddingEnd">20dip</item>
-    </style>
-
-    <style name="PadLayoutStyle.Numeric">
-        <item name="android:layout_width">0dip</item>
-        <item name="android:layout_weight">5</item>
-        <item name="android:paddingTop">2dip</item>
-        <item name="android:paddingBottom">8dip</item>
-        <item name="android:paddingStart">8dip</item>
-        <item name="android:paddingEnd">8dip</item>
-    </style>
-
-    <style name="PadLayoutStyle.Operator">
-        <item name="android:layout_width">0dip</item>
-        <item name="android:layout_weight">3</item>
-        <item name="android:paddingTop">2dip</item>
-        <item name="android:paddingBottom">8dip</item>
-        <item name="android:paddingStart">4dip</item>
-        <item name="android:paddingEnd">28dip</item>
-    </style>
-
-</resources>
diff --git a/res/values-w375dp-h375dp/dimens.xml b/res/values-w375dp-h375dp/dimens.xml
deleted file mode 100644
index a747231..0000000
--- a/res/values-w375dp-h375dp/dimens.xml
+++ /dev/null
@@ -1,34 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<!--
-  Copyright (C) 2016 The Android Open Source Project
-
-  Licensed under the Apache License, Version 2.0 (the "License");
-  you may not use this file except in compliance with the License.
-  You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-  Unless required by applicable law or agreed to in writing, software
-  distributed under the License is distributed on an "AS IS" BASIS,
-  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  See the License for the specific language governing permissions and
-  limitations under the License.
-  -->
-
-<resources>
-    <!-- Dimens for display formula. -->
-    <dimen name="formula_padding_top">2dip</dimen>
-    <dimen name="formula_padding_bottom">10dip</dimen>
-    <dimen name="formula_padding_start">16dip</dimen>
-    <dimen name="formula_padding_end">16dip</dimen>
-    <dimen name="formula_min_textsize">32dip</dimen>
-    <dimen name="formula_max_textsize">32dip</dimen>
-    <dimen name="formula_step_textsize">8dip</dimen>
-
-    <!-- Dimens for display result. -->
-    <dimen name="result_padding_top">12dip</dimen>
-    <dimen name="result_padding_bottom">18dip</dimen>
-    <dimen name="result_padding_start">16dip</dimen>
-    <dimen name="result_padding_end">16dip</dimen>
-    <dimen name="result_textsize">32dip</dimen>
-</resources>
\ No newline at end of file
diff --git a/res/values-w375dp-h375dp/layout.xml b/res/values-w375dp-h375dp/layout.xml
deleted file mode 100644
index 3890667..0000000
--- a/res/values-w375dp-h375dp/layout.xml
+++ /dev/null
@@ -1,23 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<!--
-  Copyright (C) 2016 The Android Open Source Project
-
-  Licensed under the Apache License, Version 2.0 (the "License");
-  you may not use this file except in compliance with the License.
-  You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-  Unless required by applicable law or agreed to in writing, software
-  distributed under the License is distributed on an "AS IS" BASIS,
-  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  See the License for the specific language governing permissions and
-  limitations under the License.
-  -->
-
-<resources>
-    <item name="activity_calculator" type="layout">@layout/activity_calculator_port</item>
-    <item name="display" type="layout">@layout/display_two_line</item>
-    <item name="pad_operator" type="layout">@layout/pad_operator_two_col</item>
-    <item name="pad_advanced" type="layout">@layout/pad_advanced_4x4</item>
-</resources>
diff --git a/res/values-w375dp-h375dp/styles.xml b/res/values-w375dp-h375dp/styles.xml
deleted file mode 100644
index 1e4ddbd..0000000
--- a/res/values-w375dp-h375dp/styles.xml
+++ /dev/null
@@ -1,74 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<!--
-  Copyright (C) 2016 The Android Open Source Project
-
-  Licensed under the Apache License, Version 2.0 (the "License");
-  you may not use this file except in compliance with the License.
-  You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-  Unless required by applicable law or agreed to in writing, software
-  distributed under the License is distributed on an "AS IS" BASIS,
-  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  See the License for the specific language governing permissions and
-  limitations under the License.
-  -->
-
-<resources xmlns:android="http://schemas.android.com/apk/res/android">
-
-    <style name="PadButtonStyle.Advanced">
-        <item name="background">@drawable/pad_button_advanced_background</item>
-        <item name="android:textColor">@color/pad_button_advanced_text_color</item>
-        <item name="android:textSize">17dip</item>
-    </style>
-
-    <style name="PadButtonStyle.Advanced.Text">
-        <item name="textAllCaps">true</item>
-        <item name="android:textSize">15dip</item>
-    </style>
-
-    <style name="PadButtonStyle.Numeric">
-        <item name="android:textSize">27dip</item>
-    </style>
-
-    <style name="PadButtonStyle.Numeric.Equals">
-        <item name="android:visibility">gone</item>
-    </style>
-
-    <style name="PadButtonStyle.Operator">
-        <item name="android:textSize">24dip</item>
-    </style>
-
-    <style name="PadButtonStyle.Operator.Text">
-        <item name="textAllCaps">true</item>
-        <item name="android:textSize">15dip</item>
-    </style>
-
-    <style name="PadLayoutStyle.Advanced">
-        <item name="elevation">4dip</item>
-        <item name="android:paddingTop">2dip</item>
-        <item name="android:paddingBottom">8dip</item>
-        <item name="android:paddingStart">20dip</item>
-        <item name="android:paddingEnd">20dip</item>
-    </style>
-
-    <style name="PadLayoutStyle.Numeric">
-        <item name="android:layout_width">0dip</item>
-        <item name="android:layout_weight">5</item>
-        <item name="android:paddingTop">8dip</item>
-        <item name="android:paddingBottom">8dip</item>
-        <item name="android:paddingStart">8dip</item>
-        <item name="android:paddingEnd">8dip</item>
-    </style>
-
-    <style name="PadLayoutStyle.Operator">
-        <item name="android:layout_width">0dip</item>
-        <item name="android:layout_weight">3</item>
-        <item name="android:paddingTop">8dip</item>
-        <item name="android:paddingBottom">8dip</item>
-        <item name="android:paddingStart">4dip</item>
-        <item name="android:paddingEnd">28dip</item>
-    </style>
-
-</resources>
diff --git a/res/values-w375dp-h500dp-port/dimens.xml b/res/values-w375dp-h500dp-port/dimens.xml
deleted file mode 100644
index 37508de..0000000
--- a/res/values-w375dp-h500dp-port/dimens.xml
+++ /dev/null
@@ -1,34 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<!--
-  Copyright (C) 2016 The Android Open Source Project
-
-  Licensed under the Apache License, Version 2.0 (the "License");
-  you may not use this file except in compliance with the License.
-  You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-  Unless required by applicable law or agreed to in writing, software
-  distributed under the License is distributed on an "AS IS" BASIS,
-  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  See the License for the specific language governing permissions and
-  limitations under the License.
-  -->
-
-<resources>
-    <!-- Dimens for display formula. -->
-    <dimen name="formula_padding_top">16dip</dimen>
-    <dimen name="formula_padding_bottom">28dip</dimen>
-    <dimen name="formula_padding_start">16dip</dimen>
-    <dimen name="formula_padding_end">16dip</dimen>
-    <dimen name="formula_min_textsize">42dip</dimen>
-    <dimen name="formula_max_textsize">74dip</dimen>
-    <dimen name="formula_step_textsize">8dip</dimen>
-
-    <!-- Dimens for display result. -->
-    <dimen name="result_padding_top">16dip</dimen>
-    <dimen name="result_padding_bottom">42dip</dimen>
-    <dimen name="result_padding_start">16dip</dimen>
-    <dimen name="result_padding_end">16dip</dimen>
-    <dimen name="result_textsize">42dip</dimen>
-</resources>
\ No newline at end of file
diff --git a/res/values-w375dp-h500dp-port/layout.xml b/res/values-w375dp-h500dp-port/layout.xml
deleted file mode 100644
index 9f7bd6b..0000000
--- a/res/values-w375dp-h500dp-port/layout.xml
+++ /dev/null
@@ -1,23 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<!--
-  Copyright (C) 2016 The Android Open Source Project
-
-  Licensed under the Apache License, Version 2.0 (the "License");
-  you may not use this file except in compliance with the License.
-  You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-  Unless required by applicable law or agreed to in writing, software
-  distributed under the License is distributed on an "AS IS" BASIS,
-  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  See the License for the specific language governing permissions and
-  limitations under the License.
-  -->
-
-<resources>
-    <item name="activity_calculator" type="layout">@layout/activity_calculator_port</item>
-    <item name="display" type="layout">@layout/display_two_line</item>
-    <item name="pad_operator" type="layout">@layout/pad_operator_one_col</item>
-    <item name="pad_advanced" type="layout">@layout/pad_advanced_3x5</item>
-</resources>
diff --git a/res/values-w375dp-h500dp-port/styles.xml b/res/values-w375dp-h500dp-port/styles.xml
deleted file mode 100644
index 198ad2b..0000000
--- a/res/values-w375dp-h500dp-port/styles.xml
+++ /dev/null
@@ -1,74 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<!--
-  Copyright (C) 2016 The Android Open Source Project
-
-  Licensed under the Apache License, Version 2.0 (the "License");
-  you may not use this file except in compliance with the License.
-  You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-  Unless required by applicable law or agreed to in writing, software
-  distributed under the License is distributed on an "AS IS" BASIS,
-  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  See the License for the specific language governing permissions and
-  limitations under the License.
-  -->
-
-<resources xmlns:android="http://schemas.android.com/apk/res/android">
-
-    <style name="PadButtonStyle.Advanced">
-        <item name="background">@drawable/pad_button_advanced_background</item>
-        <item name="android:textColor">@color/pad_button_advanced_text_color</item>
-        <item name="android:textSize">23dip</item>
-    </style>
-
-    <style name="PadButtonStyle.Advanced.Text">
-        <item name="textAllCaps">true</item>
-        <item name="android:textSize">20dip</item>
-    </style>
-
-    <style name="PadButtonStyle.Numeric">
-        <item name="android:textSize">36dip</item>
-    </style>
-
-    <style name="PadButtonStyle.Numeric.Equals">
-        <item name="android:visibility">visible</item>
-    </style>
-
-    <style name="PadButtonStyle.Operator">
-        <item name="android:textSize">27dip</item>
-    </style>
-
-    <style name="PadButtonStyle.Operator.Text">
-        <item name="textAllCaps">true</item>
-        <item name="android:textSize">20dip</item>
-    </style>
-
-    <style name="PadLayoutStyle.Advanced">
-        <item name="elevation">4dip</item>
-        <item name="android:paddingTop">12dip</item>
-        <item name="android:paddingBottom">20dip</item>
-        <item name="android:paddingStart">20dip</item>
-        <item name="android:paddingEnd">20dip</item>
-    </style>
-
-    <style name="PadLayoutStyle.Numeric">
-        <item name="android:layout_width">0dip</item>
-        <item name="android:layout_weight">7</item>
-        <item name="android:paddingTop">12dip</item>
-        <item name="android:paddingBottom">20dip</item>
-        <item name="android:paddingStart">12dip</item>
-        <item name="android:paddingEnd">12dip</item>
-    </style>
-
-    <style name="PadLayoutStyle.Operator">
-        <item name="android:layout_width">0dip</item>
-        <item name="android:layout_weight">3</item>
-        <item name="android:paddingTop">8dip</item>
-        <item name="android:paddingBottom">24dip</item>
-        <item name="android:paddingStart">4dip</item>
-        <item name="android:paddingEnd">28dip</item>
-    </style>
-
-</resources>
diff --git a/res/values-w520dp-h220dp-land/dimens.xml b/res/values-w520dp-h220dp-land/dimens.xml
deleted file mode 100644
index 0ae75b5..0000000
--- a/res/values-w520dp-h220dp-land/dimens.xml
+++ /dev/null
@@ -1,34 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<!--
-  Copyright (C) 2016 The Android Open Source Project
-
-  Licensed under the Apache License, Version 2.0 (the "License");
-  you may not use this file except in compliance with the License.
-  You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-  Unless required by applicable law or agreed to in writing, software
-  distributed under the License is distributed on an "AS IS" BASIS,
-  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  See the License for the specific language governing permissions and
-  limitations under the License.
-  -->
-
-<resources>
-    <!-- Dimens for display formula. -->
-    <dimen name="formula_padding_top">0dip</dimen>
-    <dimen name="formula_padding_bottom">8dip</dimen>
-    <dimen name="formula_padding_start">36dip</dimen>
-    <dimen name="formula_padding_end">36dip</dimen>
-    <dimen name="formula_min_textsize">28dip</dimen>
-    <dimen name="formula_max_textsize">28dip</dimen>
-    <dimen name="formula_step_textsize">8dip</dimen>
-
-    <!-- Dimens for display result. -->
-    <dimen name="result_padding_top">0dip</dimen>
-    <dimen name="result_padding_bottom">8dip</dimen>
-    <dimen name="result_padding_start">36dip</dimen>
-    <dimen name="result_padding_end">36dip</dimen>
-    <dimen name="result_textsize">28dip</dimen>
-</resources>
\ No newline at end of file
diff --git a/res/values-w520dp-h220dp-land/layout.xml b/res/values-w520dp-h220dp-land/layout.xml
deleted file mode 100644
index f4d3c4f..0000000
--- a/res/values-w520dp-h220dp-land/layout.xml
+++ /dev/null
@@ -1,23 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<!--
-  Copyright (C) 2016 The Android Open Source Project
-
-  Licensed under the Apache License, Version 2.0 (the "License");
-  you may not use this file except in compliance with the License.
-  You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-  Unless required by applicable law or agreed to in writing, software
-  distributed under the License is distributed on an "AS IS" BASIS,
-  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  See the License for the specific language governing permissions and
-  limitations under the License.
-  -->
-
-<resources>
-    <item name="activity_calculator" type="layout">@layout/activity_calculator_land</item>
-    <item name="display" type="layout">@layout/display_one_line</item>
-    <item name="pad_operator" type="layout">@layout/pad_operator_two_col</item>
-    <item name="pad_advanced" type="layout">@layout/pad_advanced_4x4</item>
-</resources>
diff --git a/res/values-w520dp-h220dp-land/styles.xml b/res/values-w520dp-h220dp-land/styles.xml
deleted file mode 100644
index d96b447..0000000
--- a/res/values-w520dp-h220dp-land/styles.xml
+++ /dev/null
@@ -1,75 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<!--
-  Copyright (C) 2016 The Android Open Source Project
-
-  Licensed under the Apache License, Version 2.0 (the "License");
-  you may not use this file except in compliance with the License.
-  You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-  Unless required by applicable law or agreed to in writing, software
-  distributed under the License is distributed on an "AS IS" BASIS,
-  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  See the License for the specific language governing permissions and
-  limitations under the License.
-  -->
-
-<resources xmlns:android="http://schemas.android.com/apk/res/android">
-
-    <style name="PadButtonStyle.Advanced">
-        <item name="background">@drawable/pad_button_advanced_background</item>
-        <item name="android:textColor">@color/pad_button_advanced_text_color</item>
-        <item name="android:textSize">14dip</item>
-    </style>
-
-    <style name="PadButtonStyle.Advanced.Text">
-        <item name="textAllCaps">true</item>
-        <item name="android:textSize">12dip</item>
-    </style>
-
-    <style name="PadButtonStyle.Numeric">
-        <item name="android:textSize">16dip</item>
-    </style>
-
-    <style name="PadButtonStyle.Numeric.Equals">
-        <item name="android:visibility">gone</item>
-    </style>
-
-    <style name="PadButtonStyle.Operator">
-        <item name="android:textSize">14dip</item>
-    </style>
-
-    <style name="PadButtonStyle.Operator.Text">
-        <item name="textAllCaps">true</item>
-        <item name="android:textSize">12dip</item>
-    </style>
-
-    <style name="PadLayoutStyle.Advanced">
-        <item name="android:layout_width">0dip</item>
-        <item name="android:layout_weight">4</item>
-        <item name="android:paddingTop">2dip</item>
-        <item name="android:paddingBottom">8dip</item>
-        <item name="android:paddingStart">8dip</item>
-        <item name="android:paddingEnd">8dip</item>
-    </style>
-
-    <style name="PadLayoutStyle.Numeric">
-        <item name="android:layout_width">0dip</item>
-        <item name="android:layout_weight">3</item>
-        <item name="android:paddingTop">2dip</item>
-        <item name="android:paddingBottom">8dip</item>
-        <item name="android:paddingStart">8dip</item>
-        <item name="android:paddingEnd">8dip</item>
-    </style>
-
-    <style name="PadLayoutStyle.Operator">
-        <item name="android:layout_width">0dip</item>
-        <item name="android:layout_weight">2</item>
-        <item name="android:paddingTop">2dip</item>
-        <item name="android:paddingBottom">8dip</item>
-        <item name="android:paddingStart">8dip</item>
-        <item name="android:paddingEnd">8dip</item>
-    </style>
-
-</resources>
diff --git a/res/values-w520dp-h275dp-land/dimens.xml b/res/values-w520dp-h275dp-land/dimens.xml
deleted file mode 100644
index b00f26e..0000000
--- a/res/values-w520dp-h275dp-land/dimens.xml
+++ /dev/null
@@ -1,34 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<!--
-  Copyright (C) 2016 The Android Open Source Project
-
-  Licensed under the Apache License, Version 2.0 (the "License");
-  you may not use this file except in compliance with the License.
-  You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-  Unless required by applicable law or agreed to in writing, software
-  distributed under the License is distributed on an "AS IS" BASIS,
-  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  See the License for the specific language governing permissions and
-  limitations under the License.
-  -->
-
-<resources>
-    <!-- Dimens for display formula. -->
-    <dimen name="formula_padding_top">2dip</dimen>
-    <dimen name="formula_padding_bottom">8dip</dimen>
-    <dimen name="formula_padding_start">36dip</dimen>
-    <dimen name="formula_padding_end">36dip</dimen>
-    <dimen name="formula_min_textsize">28dip</dimen>
-    <dimen name="formula_max_textsize">28dip</dimen>
-    <dimen name="formula_step_textsize">8dip</dimen>
-
-    <!-- Dimens for display result. -->
-    <dimen name="result_padding_top">8dip</dimen>
-    <dimen name="result_padding_bottom">16dip</dimen>
-    <dimen name="result_padding_start">36dip</dimen>
-    <dimen name="result_padding_end">36dip</dimen>
-    <dimen name="result_textsize">28dip</dimen>
-</resources>
\ No newline at end of file
diff --git a/res/values-w520dp-h275dp-land/layout.xml b/res/values-w520dp-h275dp-land/layout.xml
deleted file mode 100644
index 15b5b1b..0000000
--- a/res/values-w520dp-h275dp-land/layout.xml
+++ /dev/null
@@ -1,23 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<!--
-  Copyright (C) 2016 The Android Open Source Project
-
-  Licensed under the Apache License, Version 2.0 (the "License");
-  you may not use this file except in compliance with the License.
-  You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-  Unless required by applicable law or agreed to in writing, software
-  distributed under the License is distributed on an "AS IS" BASIS,
-  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  See the License for the specific language governing permissions and
-  limitations under the License.
-  -->
-
-<resources>
-    <item name="activity_calculator" type="layout">@layout/activity_calculator_land</item>
-    <item name="display" type="layout">@layout/display_two_line</item>
-    <item name="pad_advanced" type="layout">@layout/pad_advanced_3x5</item>
-    <item name="pad_operator" type="layout">@layout/pad_operator_two_col</item>
-</resources>
diff --git a/res/values-w520dp-h275dp-land/styles.xml b/res/values-w520dp-h275dp-land/styles.xml
deleted file mode 100644
index 3d8a630..0000000
--- a/res/values-w520dp-h275dp-land/styles.xml
+++ /dev/null
@@ -1,75 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<!--
-  Copyright (C) 2016 The Android Open Source Project
-
-  Licensed under the Apache License, Version 2.0 (the "License");
-  you may not use this file except in compliance with the License.
-  You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-  Unless required by applicable law or agreed to in writing, software
-  distributed under the License is distributed on an "AS IS" BASIS,
-  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  See the License for the specific language governing permissions and
-  limitations under the License.
-  -->
-
-<resources xmlns:android="http://schemas.android.com/apk/res/android">
-
-    <style name="PadButtonStyle.Advanced">
-        <item name="background">@drawable/pad_button_advanced_background</item>
-        <item name="android:textColor">@color/pad_button_advanced_text_color</item>
-        <item name="android:textSize">17dip</item>
-    </style>
-
-    <style name="PadButtonStyle.Advanced.Text">
-        <item name="textAllCaps">true</item>
-        <item name="android:textSize">14dip</item>
-    </style>
-
-    <style name="PadButtonStyle.Numeric">
-        <item name="android:textSize">20dip</item>
-    </style>
-
-    <style name="PadButtonStyle.Numeric.Equals">
-        <item name="android:visibility">gone</item>
-    </style>
-
-    <style name="PadButtonStyle.Operator">
-        <item name="android:textSize">17dip</item>
-    </style>
-
-    <style name="PadButtonStyle.Operator.Text">
-        <item name="textAllCaps">true</item>
-        <item name="android:textSize">14dip</item>
-    </style>
-
-    <style name="PadLayoutStyle.Advanced">
-        <item name="android:layout_weight">5</item>
-        <item name="android:layout_width">0dip</item>
-        <item name="android:paddingTop">2dip</item>
-        <item name="android:paddingBottom">8dip</item>
-        <item name="android:paddingStart">12dip</item>
-        <item name="android:paddingEnd">12dip</item>
-    </style>
-
-    <style name="PadLayoutStyle.Numeric">
-        <item name="android:layout_width">0dip</item>
-        <item name="android:layout_weight">5</item>
-        <item name="android:paddingTop">2dip</item>
-        <item name="android:paddingBottom">8dip</item>
-        <item name="android:paddingStart">12dip</item>
-        <item name="android:paddingEnd">12dip</item>
-    </style>
-
-    <style name="PadLayoutStyle.Operator">
-        <item name="android:layout_width">0dip</item>
-        <item name="android:layout_weight">3</item>
-        <item name="android:paddingTop">2dip</item>
-        <item name="android:paddingBottom">8dip</item>
-        <item name="android:paddingStart">12dip</item>
-        <item name="android:paddingEnd">12dip</item>
-    </style>
-
-</resources>