Remove unnecessary async function

Author: mostafa

main.py

@@ -158,10 +158,6 @@ def __mapping__(self) -> typing.Dict[str, grpclib.const.Handler]:
         return remapping
 
 
-async def ping() -> bool:
-    return True
-
-
 async def serve() -> None:
     # Instantiate the plugin.
     plugin = Plugin()