[clang] [clang-tools-extra] [llvm] Dont alter cold function alignment unless using Os (PR #72387)

[Phil Camp via cfe-commits]

FlameTop wrote:

@pogo59 I agree that stating the PS ABI has an explicit function alignment unless overridden does negate the need for a new attribute. I will re-work the code to remove the new attribute and instead enforce it for the PS ABI target.  

https://github.com/llvm/llvm-project/pull/72387