Removed an outdated comment above IMPLEMENT_UNARY_OP_VEC(abs) (#22272)
Summary:
due to 82b570528db0a43fc04bb90f5d4538c01e4a5582
Pull Request resolved: https://github.com/pytorch/pytorch/pull/22272
Differential Revision: D16024544
Pulled By: bddppq
fbshipit-source-id: 37955bff3301975c0dd6abde8a3ba79af0555111
