Clean up unnecessary proguard files in frameworks/base

Delete proguard files that are either unused or redundant with
global or aapt-generated proguard flags. This change is a no-op.

Bug: 248580093
Change-Id: I6dcb3fb9584e9a15ac66104df6696780c166054d
Test: m + verify identical builds

2 files changed, 1 insertions, 22 deletions

diff --git a/startop/apps/ColorChanging/app/build.gradle b/startop/apps/ColorChanging/app/build.gradle
index ab955aaf90ee..11b14c04f1b9 100644
--- a/startop/apps/ColorChanging/app/build.gradle
+++ b/startop/apps/ColorChanging/app/build.gradle
@@ -14,7 +14,7 @@ android {
     buildTypes {
         release {
             minifyEnabled false
-            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
+            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt')
         }
     }
 }
diff --git a/startop/apps/ColorChanging/app/proguard-rules.pro b/startop/apps/ColorChanging/app/proguard-rules.pro
deleted file mode 100644
index f1b424510da5..000000000000
--- a/startop/apps/ColorChanging/app/proguard-rules.pro
+++ /dev/null
@@ -1,21 +0,0 @@
-# Add project specific ProGuard rules here.
-# You can control the set of applied configuration files using the
-# proguardFiles setting in build.gradle.
-#
-# For more details, see
-#   http://developer.android.com/guide/developing/tools/proguard.html
-
-# If your project uses WebView with JS, uncomment the following
-# and specify the fully qualified class name to the JavaScript interface
-# class:
-#-keepclassmembers class fqcn.of.javascript.interface.for.webview {
-#   public *;
-#}
-
-# Uncomment this to preserve the line number information for
-# debugging stack traces.
-#-keepattributes SourceFile,LineNumberTable
-
-# If you keep the line number information, uncomment this to
-# hide the original source file name.
-#-renamesourcefileattribute SourceFile