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

[Paschalis Mpeis via llvm-commits]

https://github.com/paschalis-mpeis commented:

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.

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