Remove an old stdio.h include from the invalid-array test

This should get it up and running on win and other builders without system
headers.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@196738 91177308-0d34-0410-b5e6-96231b3b80d8

test/Sema/crash-invalid-array.c

-// RUN: %clang_cc1 -triple x86_64-apple-darwin -fsyntax-only -verify %s
+// RUN: %clang_cc1 -triple=x86_64-apple-darwin -fsyntax-only -verify %s
 // PR6913
 
-#include <stdio.h>
-
 int main()
 {
    int x[10][10];