Try to fix OOB tests on at least Windows after r367642

gtest's built-in regex engine doesn't support (). Looks like it's not
needed, just remove it.

See PR42868 for more details.

git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@367873 91177308-0d34-0410-b5e6-96231b3b80d8
1 file changed