Update app.py

app.py

@@ -445,10 +445,7 @@ with gr.Blocks(title="Document Q&A System", css=custom_css) as demo:
                 ],
                 title="Document Q&A",
                 description="Ask questions about your uploaded document",
-                theme="soft",
-                retry_btn=None,
-                undo_btn=None,
-                clear_btn="Clear Chat"
+                theme="soft"
             )
 
     with gr.Row():