remove consistency check from setup (#30043)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/30043
This is already checked on in the GH actions linter, so this check is
redundant. And putting it in `setup` has the effect of blocking direct
changes to config.yml when I want to experiment, which is a bit
bothersome.
Test Plan: Imported from OSS
Differential Revision: D18611674
Pulled By: suo
fbshipit-source-id: f81670ae9f264408a3ea72c1ba5fcea208681311
