Remove the use of circleci. (#1258)
Summary:
We can deprecate CircleCI because GHA PR testing is now working with A100 runners.
Pull Request resolved: https://github.com/pytorch/benchmark/pull/1258
Reviewed By: davidberard98
Differential Revision: D42683318
Pulled By: xuzhao9
fbshipit-source-id: 97473e4ceb4e03a8e063cc3f83fd8a5b01f7e0e0
