fix double method call

src/main/java/com/owncloud/android/ui/activity/NotificationsActivity.java

@@ -167,7 +167,6 @@ public class NotificationsActivity extends FileActivity {
         recyclerView.addItemDecoration(dividerItemDecoration);
 
         fetchAndSetData();
-        fetchAndSetData();
     }
 
     private void populateList(List<Notification> notifications) {