[clang] [compiler-rt] [llvm] [FMV][AArch64] Remove features which expose non exploitable runtime behavior. (PR #114387)

[Alexandros Lamprineas via cfe-commits]

================
@@ -45,8 +45,6 @@ static void __init_cpu_features_constructor(unsigned long hwcap,
     setCPUFeature(FEAT_SSBS2);
   if (hwcap2 & HWCAP2_MTE)
     setCPUFeature(FEAT_MEMTAG2);
-  if (hwcap2 & HWCAP2_MTE3)
----------------
labrinea wrote:

There are no uses of the removed features in other targets.

https://github.com/llvm/llvm-project/pull/114387