[llvm] [ci] Don't add more check targets if "check-all" is present (PR #110277)

[David Spickett via llvm-commits]

DavidSpickett wrote:

For now, https://github.com/llvm/llvm-project/pull/111515 will do as suggested and use check-compiler-rt.

https://github.com/llvm/llvm-project/pull/110277