Mojo C++ bindings: remove the utility/ folder.

mojo/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")
 
 group("mojo") {
   # Meta-target, don't link into production code.
   testonly = true
   deps = [
@@ skipping 23 matching lines @@
     "//mojo/common:mojo_common_unittests",
     "//mojo/converters/surfaces/tests:mojo_surfaces_lib_unittests",
     "//mojo/edk/js/test:js_integration_tests",
     "//mojo/edk/js/test:js_unittests",
     "//mojo/edk/system:mojo_message_pipe_perftests",
     "//mojo/edk/system:mojo_system_unittests",
     "//mojo/edk/test:mojo_public_bindings_perftests",
     "//mojo/edk/test:mojo_public_bindings_unittests",
     "//mojo/edk/test:mojo_public_system_perftests",
     "//mojo/edk/test:mojo_public_system_unittests",
-    "//mojo/edk/test:mojo_public_utility_unittests",
     "//mojo/services/network:apptests",
     "//mojo/shell/public/cpp/tests:mojo_public_application_unittests",
     "//mojo/shell/runner/host:mojo_runner_host_unittests",
     "//mojo/shell/tests",
   ]
 }