remove //c10:headers dependency from //c10 (#70996)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/70996
This is no longer necessary and does not exist internally.
ghstack-source-id: 148159361
Test Plan: Relying on CI.
Reviewed By: malfet
Differential Revision: D33477755
fbshipit-source-id: 7d375a0770d5c6277cfdea4bb0e85a9b2b4f40cd
(cherry picked from commit 360f9a548c2e4cde1b97b5902ca62a8e43af4070)
