[llvm] ARM: Remove check for isAAPCS_ABI when enabling various aeabi calls (PR #152108)

[David Green via llvm-commits]

davemgreen wrote:

There are quite a few references in https://github.com/search?q=mabi%3Daapcs&type=code, I'm not sure if they do much that is useful.

https://github.com/llvm/llvm-project/pull/152108