[llvm] [Support] Use std::filesystem::remove_all() in remove_directories() (PR #119146)

[Dmitry Vasilyev via llvm-commits]

slydiman wrote:

The location and reason for the hang are not clear from this stack trace. It is clear that we cannot rely on libstdc++.
I don't like the idea of ​​a complete custom implementation with a bunch of heuristics.
So probably #118677 is the safest way. 

https://github.com/llvm/llvm-project/pull/119146