[llvm] Remove iOS 5 check for tailcalls on ARM (PR #133354)

[David Green via llvm-commits]

davemgreen wrote:

> A quick dig through the relevant radars suggests that the issue was lack of support in the dynamic linker prior to iOS 5. This is the correct version check in that context. I think the proper fix for https://github.com/llvm/llvm-project/issues/102053 is to add a diagnostic in clang for this case.

Oh I see.

https://github.com/llvm/llvm-project/pull/133354