refactor profiling optional (#47667)
Summary: Pull Request resolved: https://github.com/pytorch/pytorch/pull/47667
Test Plan: Imported from OSS
Reviewed By: anjali411, ngimel
Differential Revision: D25255572
Pulled By: Krovatkin
fbshipit-source-id: d0152c9ef5b1994e27be9888bcb123dca3ecd88f
