[clang] Revert changes in AddDefaultGCCPrefixes() for SystemZTriples. (PR #94729)

[Jonas Paulsson via cfe-commits]

JonPsson1 wrote:

I think other folks than myself also got a similar problem, so it's not just on my machine / setup.

Should everybody set LLVM_DEFAULT_TARGET_TRIPLE with cmake instead of this patch? Sorry, not very familiar with this...

Would it be ok to apply this for now?


https://github.com/llvm/llvm-project/pull/94729