[clang] [Driver,AArch64] Remove AArch32-specific -m[no-]unaligned-access (PR #85441)

[Jon Roelofs via cfe-commits]

jroelofs wrote:

> If Apple platforms need this option, I can keep it recognized but only for Apple.

I don't see any projects that use `-m(no-)unaligned-access`, but it could be that I don't have permissions on ones that do. I'll give our qualification team a heads-up if/when you land it, and if we need to we can have an exception for `*-apple-*` triples or something. We'll let you know.

https://github.com/llvm/llvm-project/pull/85441