Suppress XCode build warnings (#31000)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/31000
## Summary
Add Fastlane configurations to suppress the build warnings from XCode.
Test Plan: Imported from OSS
Differential Revision: D18912489
Pulled By: xta0
fbshipit-source-id: f2c54d54a12ad2415695d1fcb1800684c7a9e560
