Remove unwanted comma (#71193)
Summary:
Fixes https://github.com/pytorch/pytorch/issues/70611
Pull Request resolved: https://github.com/pytorch/pytorch/pull/71193
Reviewed By: ngimel
Differential Revision: D33542841
Pulled By: mruberry
fbshipit-source-id: 0f2f1218c056aea7ecf86ba4036cfb10df6e8614
