Copy: Re-use existing neg and conj kernel implementations (#68949)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/68949
This reuses the existing `neg_kernel` and `conj_kernel`
implementations for copy, saving some binary size and compile time.
Test Plan: Imported from OSS
Reviewed By: ngimel
Differential Revision: D33064390
Pulled By: anjali411
fbshipit-source-id: eb0ee94ed3db44ae828ea078ba616365f97a7ff5
