[clang] [clang][CodeGen] Make `UnqualPtrTy` truly unqualified (PR #94388)

[Alexander Richardson via cfe-commits]

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

This looks fine to me now, but I'd suggest a TODO comment that UnqualPtrTy should be removed in the future.

https://github.com/llvm/llvm-project/pull/94388