[ci] remove circleci mac jobs (#87225)
mac jobs are run on every pr after approval, so these are redundant
ios jobs can stay until the end of the year because they are on periodic and not run on every pr
Pull Request resolved: https://github.com/pytorch/pytorch/pull/87225
Approved by: https://github.com/malfet, https://github.com/ZainRizvi, https://github.com/janeyx99
