Update app.py

app.py

@@ -252,9 +252,7 @@ with gr.Blocks(theme=theme, css=custom_css) as demo:
         ],
         cache_examples=False,
         submit_btn="Submit",
-        retry_btn="Retry",
-        clear_btn="Clear",
-        undo_btn=None,
+        clear_btn="Clear"
     )
 
 if __name__ == "__main__":