Revert worker.py combatilibity fix (not needed anymore)

Signed-off-by: Ankit Kumar <ankikuma@microsoft.com>

Author: ankitkumarr

python/worker.py

@@ -1,46 +1,4 @@
-"""Main entrypoint."""
-
-
-try:
-    from azure.functions_worker.main import main
-
-except ImportError:
-    # Compatibility with hard-bundled pre-beta worker versions in
-    # deployed function apps.
-    import argparse
-    import traceback
-
-    def parse_args():
-        parser = argparse.ArgumentParser(
-            description='Python Azure Functions Worker')
-        parser.add_argument('--host')
-        parser.add_argument('--port', type=int)
-        parser.add_argument('--workerId', dest='worker_id')
-        parser.add_argument('--requestId', dest='request_id')
-        parser.add_argument('--log-level', type=str, default='INFO',
-                            choices=['TRACE', 'INFO', 'WARNING', 'ERROR'],)
-        parser.add_argument('--log-to', type=str, default=None,
-                            help='log destination: stdout, stderr, '
-                                 'syslog, or a file path')
-        parser.add_argument('--grpcMaxMessageLength', type=int,
-                            dest='grpc_max_msg_len')
-        return parser.parse_args()
-
-    def main():
-        args = parse_args()
-
-        import azure.functions  # NoQA
-        import azure.functions_worker
-        from azure.functions_worker import aio_compat
-
-        try:
-            return aio_compat.run(azure.functions_worker.start_async(
-                args.host, args.port, args.worker_id, args.request_id,
-                args.grpc_max_msg_len))
-        except Exception:
-            print(traceback.format_exc(), flush=True)
-            raise
-
+from azure.functions_worker import main
 
 if __name__ == '__main__':
-    main()
+    main.main()