[llvm] [test] Disable makeAllowedFCmpRegion due to taking too long (PR #111056)

[Yingwei Zheng via llvm-commits]

dtcxzyw wrote:

> IRTests used to take 57s for 782 tests and it now takes 2m2s for 783 tests. This is more than 100% increase just from one test, so it is still an issue for the Debug build.

I am sorry I cannot make it faster on debug build.
@aeubanks Can you make these exhaustive tests guarded by `#ifndef NDEBUG`?



https://github.com/llvm/llvm-project/pull/111056