Remove the feature flag for using new title.

- remove all code that check for the feature flag, and use the new logic
by default.

Change-Id: I7fbe60da84c1c0f35e7241402a71d2bc4cd300e6
Fixes: 64564191
Test: make RunSettingsRoboTests

src/com/android/settings/ResetNetwork.java

@@ -68,9 +68,7 @@ public class ResetNetwork extends InstrumentedPreferenceFragment {
     @Override
     public void onCreate(@Nullable Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
-        if (usePreferenceScreenTitle()) {
-            getActivity().setTitle(R.string.reset_network_title);
-        }
+        getActivity().setTitle(R.string.reset_network_title);
     }
 
     /**