Disable test_nccl for ROCm (#38801)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/38801
NCCL specific tests that shouldn't be run on ROCm
ghstack-source-id: 104481245
Test Plan: waitforbuildbot
Differential Revision: D21667348
fbshipit-source-id: a3e558185d9b74e1eac5fae27d97d5d026baa0a1
