Delete dead test.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@221434 91177308-0d34-0410-b5e6-96231b3b80d8
Use FileCheck.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@221435 91177308-0d34-0410-b5e6-96231b3b80d8