[llvm] On Windows, remove the UCRT libraries from the release script (PR #128378)

[Hans Wennborg via llvm-commits]

https://github.com/zmodem approved this pull request.

I dug through the code to find out why we were shipping the UCRT to begin with. The reason seems to have been https://github.com/llvm/llvm-project/issues/31047 and https://github.com/llvm/llvm-project/commit/cfd0b6f34fcd9cccc666c73936cc44976bea37ee

Since nobody complained since, I guess that might not be a problem anymore?

Anyway, it doesn't make sense to include the UCRT when we're linking statically.

https://github.com/llvm/llvm-project/pull/128378