Cleanup Controllers/Fragments

- Removed extra comments in DevelopmentSettingsDashboardFragment
 - Removed unused methods from controllers
 - Clean up method names

Bug: 34203528
Test: make RunSettingsRoboTests -j40
Change-Id: Ibe7a0921926d4529f62a212b55c8fa2f14ecb18b

src/com/android/settings/development/ShortcutManagerThrottlingPreferenceController.java

@@ -58,16 +58,6 @@ public class ShortcutManagerThrottlingPreferenceController extends
         return true;
     }
 
-    @Override
-    protected void onDeveloperOptionsSwitchEnabled() {
-        // intentional no-op
-    }
-
-    @Override
-    protected void onDeveloperOptionsSwitchDisabled() {
-        // intentional no-op
-    }
-
     private void resetShortcutManagerThrottling() {
         if (mShortcutService == null) {
             return;