[libcxx-commits] [libcxx] [runtimes] Remove explicit -isysroot from the testing configurations on macOS (PR #66265)

[Louis Dionne via libcxx-commits]

ldionne wrote:

I will land this tomorrow unless there is additional discussion. It looks like #67201 would allow you to solve your problem without creating a custom `.cfg.in` file, which is great. But even regardless of #67201, the intended way to use the libc++ test suite is to create a `.cfg.in` file that suits your needs if the general ones don't, not to add more configuration options to the general ones.

https://github.com/llvm/llvm-project/pull/66265