Restore entry list item animations

This fixes an issue where the entry list items no longer animated upon
move, insert, delete, etc.

RecyclerView's DefaultItemAnimator automatically scales the animations
according to the user's settings.

Introduced in 9ff8efab69

app/src/main/java/com/beemdevelopment/aegis/ui/views/EntryListView.java

@@ -103,7 +103,6 @@ public class EntryListView extends Fragment implements EntryAdapter.Listener {
 
         // set up the recycler view
         _recyclerView = view.findViewById(R.id.rvKeyProfiles);
-        _recyclerView.setItemAnimator(null);
         _recyclerView.addOnScrollListener(new RecyclerView.OnScrollListener() {
             @Override
             public void onScrolled(RecyclerView recyclerView, int dx, int dy) {