Move //mojo/services tracing & catalog to //services

mojo/services/public/build/config/BUILD.gn

-# Copyright 2015 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.
-
-# The absolute path to the directory containing the Mojo services produced
-# out of Chromium.
-mojo_services_root = get_path_info("../../..", "abspath")
-
-# NOTE: This config name must be in sync with the name of the config used by
-# services that developed out of the Mojo repo so that Chromium's services'
-# BUILD.gn files can work seamlessly in Chromium and when pulled into Mojo or a
-# client repo.
-config("mojo_services") {
-  include_dirs = [
-    # Include paths in Chromium Mojo services' client-side code are specified
-    # relative to the directory holding the services' client-side code.
-    mojo_services_root,
-
-    # The same goes for files generated from mojoms.
-    root_gen_dir + mojo_services_root,
-  ]
-}