[llvm] [LV][NFC] Remove more unnecessary passes from RUN lines (PR #193686)

[Florian Hahn via llvm-commits]

https://github.com/fhahn commented:

It looks like there are a few more tests that use `simplify cfg`, are those still needed?

Some tests also pass `-simplifycfg-require-and-preserve-domtree`, without running `simplifycfg` it seems. Would be good to also clean those up

https://github.com/llvm/llvm-project/pull/193686