[llvm] [llvm-reduce] Remove intrinsic-like-functions test (PR #196436)

[Matt Arsenault via llvm-commits]

https://github.com/arsenm requested changes to this pull request.

This is a thing. There is a distinction between recognized intrinsics and functions that start with llvm., which are still special 

https://github.com/llvm/llvm-project/pull/196436