try to fix ipykernel again

Author: blink1073

jupyter_client/utils.py

@@ -4,18 +4,19 @@
 - vendor functions from ipython_genutils that should be retired at some point.
 """
 import asyncio
-import atexit
 import inspect
 import os
 
+# import atexit
+
 
 def run_sync(coro):
     def wrapped(*args, **kwargs):
         try:
             loop = asyncio.get_running_loop()
         except RuntimeError:
             loop = asyncio.new_event_loop()
-            atexit.register(loop.close)
+            # atexit.register(loop.close)
             asyncio.set_event_loop(loop)
         import nest_asyncio  # type: ignore