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/datetime/ZonePicker.java

@@ -35,7 +35,6 @@ import android.widget.TextView;
 
 import com.android.internal.logging.nano.MetricsProto;
 import com.android.settings.R;
-import com.android.settings.core.InstrumentedPreferenceFragment;
 import com.android.settings.core.instrumentation.Instrumentable;
 import com.android.settings.core.instrumentation.VisibilityLoggerMixin;
 import com.android.settingslib.datetime.ZoneGetter;
@@ -167,9 +166,7 @@ public class ZonePicker extends ListFragment implements Instrumentable {
         // Sets the adapter
         setSorting(true);
         setHasOptionsMenu(true);
-        if (InstrumentedPreferenceFragment.usePreferenceScreenTitle()) {
-            activity.setTitle(R.string.date_time_set_timezone);
-        }
+        activity.setTitle(R.string.date_time_set_timezone);
     }
 
     @Override