improve findbugs score

Signed-off-by: Andy Scherzinger <info@andy-scherzinger.de>

src/main/java/com/owncloud/android/ui/fragment/LocalFileListFragment.java

@@ -169,11 +169,6 @@ public class LocalFileListFragment extends ExtendedListFragment implements Local
         }
     }
 
-    @Override
-    public int getColumnsCount() {
-        return super.getColumnsCount();
-    }
-
     /**
      * Call this, when the user presses the up button
      */

src/main/java/com/owncloud/android/ui/fragment/OCFileListFragment.java

@@ -438,11 +438,6 @@ public class OCFileListFragment extends ExtendedListFragment implements
         );
     }
 
-    @Override
-    public int getColumnsCount() {
-        return super.getColumnsCount();
-    }
-
     @Override
     public void onShareIconClick(OCFile file) {
         if (file.isFolder()) {