Clean up //services/BUILD.gn.

services/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("//mojo/public/mojo.gni")
-
 group("services") {
   deps = [
     "//services/clipboard",
     "//services/console",
     "//services/dart",
     "//services/device_info",
     "//services/fake_surfaces",
     "//services/files",
     "//services/gles2:lib",
     "//services/http_server",
@@ skipping 15 matching lines @@
       "//services/authentication",
       "//services/location",
       "//services/sensors",
     ]
   }
 
   if (is_linux) {
     deps += [ "//services/python" ]
   }
 }