Don't call notifyDataSetChanged in onResume

The call appeared to be useless. Feel free to revert if it isn't

app/src/main/java/me/impy/aegis/MainActivity.java

@@ -341,7 +341,6 @@ public class MainActivity extends AppCompatActivity implements KeyProfileAdapter
     @Override
     protected void onResume() {
         super.onResume();
-        _keyProfileAdapter.notifyDataSetChanged();
         setPreferredTheme();
     }