CI: remove unused yaml and make upload_binary_size_to_scuba script work with GHA (#70643)
Summary:
Removes unused pytorch-job-specs.yml
It looks like the recent android GHA jobs use upload_binary_size_to_scuba.py, but a portion of the script was still using CIRCLE only variables
Pull Request resolved: https://github.com/pytorch/pytorch/pull/70643
Reviewed By: ngimel
Differential Revision: D33455659
Pulled By: janeyx99
fbshipit-source-id: cfe79a674641ed3327c7650d2107ace2a5050983