[llvm] Revert "[llvm-exegesis][AArch64] Disable pauth and ldgm as unsupported instructions fixed (#136868)" (PR #142382)

[Abhilash Majumder via llvm-commits]

abhilash1910 wrote:

Hi @tuliom  , is the opcode test also crashing with the commit ? 
I am rebasing and adjusting the changes to the #138643  for the fix. 
@lakshayk-nv  if it is failing existing tests, it makes sense to revert with the fix applied. What do you think ?

https://github.com/llvm/llvm-project/pull/142382