[libc-commits] [libc] [libc][stdlib] Remove LIBC_THREAD_LOCAL from rand_next (PR #96245)

[Nick Desaulniers via libc-commits]

nickdesaulniers wrote:

I'm talking about the `class ThreadLocal` we have in src/stdlib/rand_util.h, which is the only user.  I think that can get deleted, too, in this PR.

https://github.com/llvm/llvm-project/pull/96245