[llvm] ConstantFold: drop PointeeTy when folding GEP (NFC) (PR #125562)

[Nikita Popov via llvm-commits]

https://github.com/nikic requested changes to this pull request.

I don't think this parameter should be dropped, even if we currently happen to not have any folds that require it.

https://github.com/llvm/llvm-project/pull/125562