Revert "Use gethostuuid() on Mac to identify hosts for LockFileManager"

Broke non-Mac builds.

This reverts commit r241005.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@241007 91177308-0d34-0410-b5e6-96231b3b80d8
1 file changed