Show "no vpns added" for empty vpn screen

Removed the left-alignment on restricted empty views which was
inherited from Bluetooth settings but inconsistent with normal
settings fragments.

Bug: 22685111
Change-Id: I3a36c47d523392b8925031d4cac2ab3ef681e360

src/com/android/settings/RestrictedSettingsFragment.java

@@ -209,7 +209,6 @@ public abstract class RestrictedSettingsFragment extends SettingsPreferenceFragm
 
     protected TextView initEmptyTextView() {
         TextView emptyView = (TextView) getActivity().findViewById(android.R.id.empty);
-        emptyView.setGravity(Gravity.START | Gravity.CENTER_VERTICAL);
         return emptyView;
     }