Remove nest_asyncio from torchsnapshot

Summary: This automatic monkey-patching is preventing `libfb.py.asyncio.await_utils.async_run` from working properly in Bento.

Reviewed By: JKSenthil

Differential Revision: D60545479

fbshipit-source-id: 695487d9efd6671a9d234ad2096ef25e97f183c7

requirements.txt

@@ -2,7 +2,6 @@ PyYAML
 aiofiles
 aiohttp
 importlib-metadata
-nest_asyncio
 psutil
 pyre_extensions
 torch

torchsnapshot/__init__.py

@@ -15,26 +15,6 @@
 from .stateful import Stateful
 from .version import __version__
 
-
-def _is_notebook() -> bool:
-    try:
-        from IPython import get_ipython
-
-        return (
-            get_ipython().__class__.__name__ == "ZMQInteractiveShell"  # Jupyter
-            or get_ipython().__class__.__module__ == "google.colab._shell"  # Colab
-        )
-    except ImportError:
-        return False
-
-
-# https://github.com/jupyter/notebook/issues/3397
-if _is_notebook():
-    # @manual=fbsource//third-party/pypi/nest-asyncio:nest-asyncio
-    import nest_asyncio  # lint-fixme: DisallowNestAsyncio
-
-    nest_asyncio.apply()
-
 __all__ = [
     "__version__",
     "Snapshot",