do not create a new adapter while rotating

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

@@ -654,13 +654,6 @@ public class OCFileListFragment extends ExtendedListFragment implements OCFileLi
         super.onViewStateRestored(savedInstanceState);
 
         if (savedInstanceState != null) {
-            mAdapter = new FileListListAdapter(
-                    mJustFolders,
-                    getActivity(),
-                    mContainerActivity,
-                    this,
-                    mContainerActivity.getStorageManager());
-
             searchEvent = Parcels.unwrap(savedInstanceState.getParcelable(SEARCH_EVENT));
         }