Clean up install_triton and install_filelock in CI (#95754)
After Dockerize triton in https://github.com/pytorch/pytorch/pull/95233, we can now clean up `install_triton` and `install_filelock` in the CI to improve its reliability.
Pull Request resolved: https://github.com/pytorch/pytorch/pull/95754
Approved by: https://github.com/weiwangmeta
