Address review comments

Signed-off-by: Alex Saveau <saveau.alexandre@gmail.com>

Author: SUPERCILEX

app/src/main/java/com/firebase/uidemo/database/ChatActivity.java

@@ -20,8 +20,6 @@
 import android.support.v7.widget.LinearLayoutManager;
 import android.support.v7.widget.RecyclerView;
 import android.util.Log;
-import android.view.ContextMenu;
-import android.view.MenuItem;
 import android.view.View;
 import android.widget.Button;
 import android.widget.EditText;
@@ -143,26 +141,8 @@ private void attachRecyclerViewAdapter() {
                 mChatIndicesRef.limitToLast(50),
                 mChatRef) {
             @Override
-            public void populateViewHolder(final ChatHolder holder, Chat chat, int position) {
+            public void populateViewHolder(ChatHolder holder, Chat chat, int position) {
                 holder.bind(chat);
-
-                holder.itemView.setOnCreateContextMenuListener(new View.OnCreateContextMenuListener() {
-                    @Override
-                    public void onCreateContextMenu(ContextMenu menu,
-                                                    View v,
-                                                    ContextMenu.ContextMenuInfo menuInfo) {
-                        menu.add("Delete")
-                                .setOnMenuItemClickListener(new MenuItem.OnMenuItemClickListener() {
-                                    @Override
-                                    public boolean onMenuItemClick(MenuItem item) {
-                                        DatabaseReference ref = getRef(holder.getAdapterPosition());
-                                        mChatIndicesRef.child(ref.getKey()).removeValue();
-                                        ref.removeValue();
-                                        return true;
-                                    }
-                                });
-                    }
-                });
             }
 
             @Override