shlwapi/tests: Remove test that crashes on Win7

[Reece Dunn]

2009/8/24 Ge van Geldorp <ggeldorp at vmware.com>:
> Changelog:
>  shlwapi/tests: Remove test that crashes on Win7

-    ret = IStream_Clone(stream, NULL);
-    ok(ret == E_NOTIMPL, "expected E_NOTIMPL, got 0x%08x\n", ret);
+    /* Passing a NULL pointer crashes on Win7 */

If you are going to change this to a comment, could you please say
which argument passing NULL to causes the crash.

Thanks,
- Reece