caffe2/caffe2/fb/operators/cc_amrc: drop SIMD OpenMP vectorization
Summary: Pull Request resolved: https://github.com/pytorch/pytorch/pull/23235
Reviewed By: ajtulloch
Differential Revision: D16384612
Pulled By: luciang
fbshipit-source-id: a4c8257c6d3e151ba99167a152ad824b0dde7671
