Remove one more file that is no longer part of upstream tarballs.

Missed in previous commit.

xserver/test/ddxstubs.c

@@ -1,97 +0,0 @@
-/**
- * Copyright © 2012 Apple Inc.
- *
- *  Permission is hereby granted, free of charge, to any person obtaining a
- *  copy of this software and associated documentation files (the "Software"),
- *  to deal in the Software without restriction, including without limitation
- *  the rights to use, copy, modify, merge, publish, distribute, sublicense,
- *  and/or sell copies of the Software, and to permit persons to whom the
- *  Software is furnished to do so, subject to the following conditions:
- *
- *  The above copyright notice and this permission notice (including the next
- *  paragraph) shall be included in all copies or substantial portions of the
- *  Software.
- *
- *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- *  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- *  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
- *  THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- *  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
- *  FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
- *  DEALINGS IN THE SOFTWARE.
- */
-
-/* This file contains stubs for some symbols which are usually provided by a
- * DDX.  These stubs should allow the unit tests to build on platforms with
- * stricter linkers (eg: darwin) when the Xorg DDX is not built.
- */
-
-#ifdef HAVE_DIX_CONFIG_H
-#include <dix-config.h>
-#endif
-
-#include "input.h"
-#include "mi.h"
-
-void
-DDXRingBell(int volume, int pitch, int duration)
-{
-}
-
-void
-ProcessInputEvents(void)
-{
-    mieqProcessInputEvents();
-}
-
-void
-OsVendorInit(void)
-{
-}
-
-void
-OsVendorFatalError(const char *f, va_list args)
-{
-}
-
-void
-AbortDDX(enum ExitCode error)
-{
-    OsAbort();
-}
-
-void
-ddxUseMsg(void)
-{
-}
-
-int
-ddxProcessArgument(int argc, char *argv[], int i)
-{
-    return 0;
-}
-
-void
-ddxGiveUp(enum ExitCode error)
-{
-}
-
-Bool
-LegalModifier(unsigned int key, DeviceIntPtr pDev)
-{
-    return TRUE;
-}
-
-#ifdef XQUARTZ
-int darwinMainScreenX = 0;
-int darwinMainScreenY = 0;
-
-BOOL no_configure_window = FALSE;
-#endif
-
-#ifdef DDXBEFORERESET
-void
-ddxBeforeReset(void)
-{
-}
-#endif