removed comments

app.py

@@ -138,11 +138,9 @@ async def handle_message(message: cl.Message):
 
 @cl.on_chat_start
 async def handle_chat_start():
-    # Check if "message_history" is None
     if cl.user_session.get("message_history") is None:
         cl.user_session.set("message_history", [])
 
-    # Check if "food_data" is None
     if cl.user_session.get("food_data") is None:
         cl.user_session.set("food_data", None)
 
@@ -173,4 +171,4 @@ To learn more about how this dataset & the USDA Food Assistant were created, che
 The full code for the data pipeline and the assistant can be found on GitHub, linked [here](https://github.com/jack-tol/usda-food-data-pipeline).
 """
 
-    await cl.Message(content=welcome_message).send()
+    await cl.Message(content=welcome_message).send()