Remove empty overrides

src/org/fdroid/fdroid/AppDetails.java

@@ -308,11 +308,6 @@ public class AppDetails extends ListActivity {
         super.onPause();
     }
 
-    @Override
-    protected void onStop() {
-        super.onStop();
-    }
-
     @Override
     public Object onRetainNonConfigurationInstance() {
         stateRetained = true;

src/org/fdroid/fdroid/SearchResults.java

@@ -92,11 +92,6 @@ public class SearchResults extends ListActivity {
         updateView();
     }
 
-    @Override
-    protected void onResume() {
-        super.onResume();
-    }
-
     private void updateView() {
 
         List<String> matchingids = new ArrayList<String>();