RIP CUDA <9.2: circleci, aten, and caffe2 (#36846)
Summary: Pull Request resolved: https://github.com/pytorch/pytorch/pull/36846
Test Plan: Imported from OSS
Differential Revision: D21620850
Pulled By: ngimel
fbshipit-source-id: 7ad1676a12f86250f301095ffc6f365a3b370f34
