[llvm] Remove analysis preservations subsumed by CFG preservation. NFC (PR #212672)

[Aiden Grossman via llvm-commits]

https://github.com/boomanaiden154 approved this pull request.

LGTM.

I've been trying to make the NewPM versions clean as I port passes, but I haven't been bothering too much cleaning up the LegacyPM versions given they should get deleted eventually.

https://github.com/llvm/llvm-project/pull/212672