fix: delete useless wrap.py

Author: ChenZiHong-Gavin

graphgen/utils/__init__.py

@@ -19,4 +19,3 @@
 from .log import CURRENT_LOGGER_VAR, logger, set_logger
 from .loop import create_event_loop
 from .run_concurrent import run_concurrent
-from .wrap import async_to_sync_method