get rid of choco install (#30897)
Summary:
7zip and cmake are part of base image, no need to re-install. Remove the install step can make build/test more stable.
Pull Request resolved: https://github.com/pytorch/pytorch/pull/30897
Differential Revision: D19232961
Pulled By: mingbowan
fbshipit-source-id: fa3bbd1325839a2a977bf13fdbd97fda43793b8d
