Remove unnecessary ROCm detection code in Python scripts. (#22464)
Summary:
ROCm is already detected in cmake/public/LoadHIP.cmake. No need to
detect twice. Plus, the Python script read environment variable
ROCM_HOME, but what is really used in CMake scripts is ROCM_PATH -- A
user must specify both environment variables right. Since ROCM_HOME is
undocumented, this commit completely eradicates it.
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ezyang A remake of https://github.com/pytorch/pytorch/issues/22228 because its dependency has been dismissed.
Pull Request resolved: https://github.com/pytorch/pytorch/pull/22464
Differential Revision: D16096833
Pulled By: bddppq
fbshipit-source-id: fea461e80ee61ec77fa3a7b476f7aec4fc453d5d
