[llvm] [RemoveDIs] Update some unittests to the new format (PR #90476)

[J. Ryan Stinnett via llvm-commits]

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

Test fixes look good to me. I guess you're planning to rebase this once Stephen's PR merges...?

https://github.com/llvm/llvm-project/pull/90476