Bug fix, ccc was passing -std twice.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@56991 91177308-0d34-0410-b5e6-96231b3b80d8

utils/ccc

@@ -235,8 +235,6 @@ def main(args):
                 arg += args[i+1]
                 i += 1
             compile_opts.append(arg)
-        if arg[:5] in ['-std=']:
-            compile_opts.append(arg)
         if argkey in ('-std', '-mmacosx-version-min'):
             compile_opts.append(arg)