[llvm] [llvm-exegesis][AArch64] Disable pauth and ldgm as unsupported instructions fixed (PR #136868)

[Aiden Grossman via llvm-commits]

boomanaiden154 wrote:

I've disabled the test for now while this discussion is ongoing. I thought some of the fixes would be moving a little bit faster.

d46458c11b4ea7906e1d02d598af2033df98f80e

https://github.com/llvm/llvm-project/pull/136868