Disable XLA test workflow
Our trunk is hosed rn https://hud.pytorch.org/minihud?name_filter=pull%20/%20pytorch-xla-linux-bionic-py3.7-clang8%20/%20test%20(xla,%201,%201,%20linux.2xlarge)
This mitigates by disabling the workflow
Pull Request resolved: https://github.com/pytorch/pytorch/pull/76537
Approved by: https://github.com/atalman
