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
diff --git a/src/com/android/settings/MasterClear.java b/src/com/android/settings/MasterClear.java
index 96cc390..7a6f966 100644
--- a/src/com/android/settings/MasterClear.java
+++ b/src/com/android/settings/MasterClear.java
@@ -95,9 +95,7 @@
     @Override
     public void onCreate(@Nullable Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
-        if (usePreferenceScreenTitle()) {
-            getActivity().setTitle(R.string.master_clear_title);
-        }
+        getActivity().setTitle(R.string.master_clear_title);
     }
 
     /**