DeskClock: Another round of cleanups

* A few unused imports
* A few deprecated classes
* A few unused resources
* A few language opportunities

Change-Id: I13ab5f8b6b00eed139728e557fc964be4a09238f
diff --git a/src/com/android/alarmclock/WidgetUtils.java b/src/com/android/alarmclock/WidgetUtils.java
index 4633902..21f3bd0 100644
--- a/src/com/android/alarmclock/WidgetUtils.java
+++ b/src/com/android/alarmclock/WidgetUtils.java
@@ -26,9 +26,9 @@
 
 public final class WidgetUtils {
 
-    private static String PREFS_NAME = "com.android.alarmclock.widgets";
-    private static String PREF_PREFIX_KEY = "appwidget_";
-    private static String PREF_MODE_PREFIX = PREF_PREFIX_KEY + "solid_";
+    private static final String PREFS_NAME = "com.android.alarmclock.widgets";
+    private static final String PREF_PREFIX_KEY = "appwidget_";
+    private static final String PREF_MODE_PREFIX = PREF_PREFIX_KEY + "solid_";
 
 
     private WidgetUtils() {}