Remove xdisplaycheck from the tree

services/ui/ws/BUILD.gn

 # Copyright 2014 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 import("//build/config/ui.gni")
 import("//testing/test.gni")
 import("//services/service_manager/public/cpp/service.gni")
 import("//services/service_manager/public/service_manifest.gni")
 
 static_library("lib") {
@@ skipping 240 matching lines @@
     "//ui/gfx",
     "//ui/gfx:test_support",
     "//ui/gfx/geometry",
     "//ui/gfx/geometry/mojo",
     "//ui/gl",
   ]
 
   # TODO(fsamuel): Remove this dep. crbug.com/670454
   deps += [ "//services/ui/surfaces" ]
 
-  if (use_x11) {
-    deps += [ "//tools/xdisplaycheck" ]
-  }
-
   data_deps = [
     ":mus_ws_unittests_app_manifest",
   ]
 }
 
 service_manifest("mus_ws_unittests_app_manifest") {
   name = "mus_ws_unittests_app"
   source = "mus_ws_unittests_app_manifest.json"
 }