in test_c10d.py, remove skip_if_rocm from tests that pass locally (#35124)
Summary:
iotamudelta Test passed three iterations on the CI, no flakiness detected.
Pull Request resolved: https://github.com/pytorch/pytorch/pull/35124
Differential Revision: D20604748
Pulled By: ezyang
fbshipit-source-id: ed013ca27f38a3610108421932245b494fac28c0
