Disable cpp tests in multigpu job (#71015)
Summary:
See if this fixes the timeouts described in https://github.com/pytorch/pytorch/issues/70015
Pull Request resolved: https://github.com/pytorch/pytorch/pull/71015
Reviewed By: dagitses
Differential Revision: D33483762
Pulled By: suo
fbshipit-source-id: 09bf93e73669a1211b200b4b272bfaa0d78a21d2
