Revert [test][Driver] Fix Clang :: Driver/cl-response-file.c

This reverts r363985 (git commit d5f16d6)

This test can't use printf on Windows because the path contains
backslashes which must not be interpreted as escapes by printf.

llvm-svn: 364089

Author: rnk

clang/test/Driver/cl-response-file.c

@@ -4,7 +4,7 @@
 
 
 
-// RUN: printf '/I%S\Inputs\\cl-response-file\ /DFOO=2' > %t.rsp
+// RUN: echo '/I%S\Inputs\cl-response-file\ /DFOO=2' > %t.rsp
 // RUN: %clang_cl /c -### @%t.rsp -- %s 2>&1 | FileCheck %s
 
 // CHECK: "-I" "{{.*}}\\Inputs\\cl-response-file\\" "-D" "FOO=2"