Remove some apparently-unnecessary 'REQUIRES: system-darwin' from tests.

Let's see if any buildbots actually have trouble with these. (They at least pass on Linux.)


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@301732 91177308-0d34-0410-b5e6-96231b3b80d8
3 files changed