[llvm] [llvm][Support][Windows] Avoid crash calling remove_directories() (PR #118677)

[Martin Storsjö via llvm-commits]

mstorsjo wrote:

> Unless we can find a workaround I don't see how we can move to std::filesystem, which is very, very annoying 😞

I can try to file a bug to libstdc++ about it, so that there at least is some path towards being able to use it at some point in the future.

https://github.com/llvm/llvm-project/pull/118677