Issue fixes

app.py

@@ -44,7 +44,6 @@ def get_aqi(city:str, state:str, country:str)-> str:
     """
     try:
         IQAIR_API_KEY = os.environ["IQAIR_API_KEY"]
-        # http://api.airvisual.com/v2/city?city=Chengdu&state=Sichuan&country=China&key=2cb6f85b-18f2-453d-a0c4-f060dae8b92c
         url = f"http://api.airvisual.com/v2/city?city={city}&state={state}&country={country}&key={IQAIR_API_KEY}"
         payload={}
         headers = {}