[llvm] [profcheck] Exclude `IRCE` because it's not hooked up to the pass pipeline (PR #175238)

[Mircea Trofin via llvm-commits]

mtrofin wrote:

I'll merge to make the profcheck bot green. Would still appreciate ideas on how to detect if passes like IRCE become enabled. Thanks!

https://github.com/llvm/llvm-project/pull/175238