[clang] [Driver] Remove a bunch of unnecessary REQUIRES constraints (PR #94055)

[Paul T Robinson via cfe-commits]

pogo59 wrote:

I'm seeing two bot failures:
https://lab.llvm.org/buildbot/#/builders/60/builds/17462
https://lab.llvm.org/buildbot/#/builders/119/builds/18845
both for sysroot.c.
These are Arm/AArch64 Windows bots, based on the names, which is not an environment I have available. I cannot reproduce the failure on X86 Windows. The best I can do is mark them UNSUPPORTED: system-windows to get the bots green again.

https://github.com/llvm/llvm-project/pull/94055