#71946 Remove Python 3.6 references (#72211)
Summary:
Fixes https://github.com/pytorch/pytorch/issues/71946
This commit removes some bits of code that were hard coded for Python 3.6 support from the `.circleci` and `torch` folders. It should only be merged if https://github.com/pytorch/pytorch/issues/66462 is complete.
Pull Request resolved: https://github.com/pytorch/pytorch/pull/72211
Reviewed By: dagitses, seemethere
Differential Revision: D33982604
Pulled By: musebc
fbshipit-source-id: 8f453bf9909df615addd59538adb369c65484044
(cherry picked from commit 944a9970fe68a40999b5c8af731e632c28fd15c5)
