[llvm] [AMDGPU] remove checklines for bitcast cases, only check func name (PR #139988)

[Matt Arsenault via llvm-commits]

arsenm wrote:

It's an annoying large amount of checks but I don't see a reason to do this, they are generated. If you wanted to shrink the tests, we could reduce the number of tested subtargets, I guess. We could go down to 3 run lines at a minimum 

https://github.com/llvm/llvm-project/pull/139988