Remove many build options redundantly specified in Python build scripts. (#21877)
Summary:
Currently many build options are explicitly passed from Python build scripts to CMake. But this is unecessary, at least for many of them. This commit removes the build options that have the same name in CMakeLists.txt and environment variables (e.g., `USE_REDIS`). Additionally, many build options that are not explicitly passed to CMake are lost.
For `ONNX_ML`, `ONNX_NAMESPACE`, and `BUILDING_WITH_TORCH_LIBS`, I changed their default values in CMake scripts (as consistent with what the `CMake.defines` call meant), to avoid their default values being redundantly set in the Python build scripts.
Pull Request resolved: https://github.com/pytorch/pytorch/pull/21877
Differential Revision: D15964996
Pulled By: ezyang
fbshipit-source-id: 127a46af7e2964885ffddce24e1a62995e0c5007
