removing old comment (#56430)
Summary:
Removing a comment which is no longer relevant after
https://github.com/pytorch/pytorch/pull/56089
Pull Request resolved: https://github.com/pytorch/pytorch/pull/56430
Reviewed By: desertfire
Differential Revision: D28515547
Pulled By: Krovatkin
fbshipit-source-id: c4e62741a872fef015248cd7ab1b3213d35109ee
