[llvm] [TLI][NFC] Fix ordering of ArmPL and SLEEF tests (PR #77609)

[Maciej Gabka via llvm-commits]

mgabka wrote:

> In `replace-with-veclib-*.ll` files, `frem` is at the end of the tests. It could stay there, if we see it as an exception, since it's the only non-call instruction.
> 
> Just wanted to make sure that this did not stay there by mistake.

yes, that was my idea, since frem is the only one instruction, and there is no mappings for it (but jut for fmod) I wanted to leave it at the end.

https://github.com/llvm/llvm-project/pull/77609