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/LocalBackupPasswordPreferenceController.java

@@ -55,16 +55,6 @@ public class LocalBackupPasswordPreferenceController extends
         updatePasswordSummary(preference);
     }
 
-    @Override
-    protected void onDeveloperOptionsSwitchEnabled() {
-        // intentional no-op
-    }
-
-    @Override
-    protected void onDeveloperOptionsSwitchDisabled() {
-        // intentional no-op
-    }
-
     private void updatePasswordSummary(Preference preference) {
         preference.setEnabled(isAdminUser() && mBackupManager != null);
         if (mBackupManager == null) {