[llvm-branch-commits] Revert "Reapply "[clang] Extend diagnose_if to accept more detailed warning information (#70976)" (#108453)" (PR #108645)

[Florian Mayer via llvm-branch-commits]

fmayer wrote:

The error is gone in the first buildbot build with this revert: https://lab.llvm.org/buildbot/#/builders/169/builds/3191/steps/9/logs/stdio

https://github.com/llvm/llvm-project/pull/108645