Disable PyTorch iOS ARM64 builds until cert problem is fixed (#44499)
Summary: Pull Request resolved: https://github.com/pytorch/pytorch/pull/44499
Reviewed By: seemethere, xta0
Differential Revision: D23634961
Pulled By: malfet
fbshipit-source-id: e32ae29c42c351bcb4f48bc52d4082ae56545e5b
