Revert r158423 corresponding to r158796, "test/Driver/warning-options.cpp: Mark as XFAIL:cygming. -pedantic is passed with gcc-as driver. PR12920"

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@158915 91177308-0d34-0410-b5e6-96231b3b80d8
1 file changed