pytorch

581bf010 - [Gradient Compression] Remove unnecessary warning on the rst file and the check on C++ version (#58170)

[Gradient Compression] Remove unnecessary warning on the rst file and the check on C++ version (#58170) Summary: Pull Request resolved: https://github.com/pytorch/pytorch/pull/58170 Now comm hook can be supported on MPI and GLOO backends besides NCCL. No longer need these warnings and check. ghstack-source-id: 128799123 Test Plan: N/A Reviewed By: agolynski Differential Revision: D28388861 fbshipit-source-id: f56a7b9f42bfae1e904f58cdeccf7ceefcbb0850