[llvm] Revert "[llvm][AArch64] Autoupgrade function attributes from Module attributes." (PR #85291)

[Nick Desaulniers via llvm-commits]

https://github.com/nickdesaulniers approved this pull request.

Thanks, this should unblock the performance regressions reported for LTO.

https://github.com/llvm/llvm-project/pull/85291