Update main.py

main.py

@@ -33,7 +33,7 @@ def root():
      return {"title": "Echo Bot"}
 
 @app.post("/webhook")
-async def webhook(request: Request, x_line_signature: str = Header(None)):
+async def webhook(request: Request):
     signature = request.headers['X-Line-Signature']
 
     body = request.get_data(as_text=True)