[PyTorch] Remove outdated C++11 note on C10_DEPRECATED (#55061)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/55061
We're C++14.
ghstack-source-id: 125377571
Test Plan: Review
Reviewed By: bhosmer
Differential Revision: D27467852
fbshipit-source-id: 720cdd02813e84a43357ab5e35dfebe3d773bb0f
