remove unnecessary imports of asyncio

Signed-off-by: Achille Roussel <[email protected]>

src/dispatch/experimental/lambda_handler.py

@@ -18,7 +18,6 @@ def handler(event, context):
         dispatch.handle(event, context, entrypoint="entrypoint")
     """
 
-import asyncio
 import base64
 import json
 import logging

src/dispatch/flask.py

@@ -17,7 +17,6 @@ def read_root():
         my_function.dispatch()
     """
 
-import asyncio
 import logging
 from typing import Optional, Union
 

src/dispatch/http.py

@@ -1,6 +1,5 @@
 """Integration of Dispatch functions with http."""
 
-import asyncio
 import logging
 import os
 from datetime import timedelta