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

mojo/public/cpp/utility/BUILD.gn

Index: mojo/public/cpp/utility/BUILD.gn
diff --git a/mojo/public/cpp/utility/BUILD.gn b/mojo/public/cpp/utility/BUILD.gn
deleted file mode 100644
index c95efac2078d80c4ff2498ace4e4dd8ec6a53420..0000000000000000000000000000000000000000
--- a/mojo/public/cpp/utility/BUILD.gn
+++ /dev/null
@@ -1,33 +0,0 @@
-# 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.
-
-source_set("utility") {
-  sources = [
-    "lib/mutex.cc",
-    "lib/run_loop.cc",
-    "lib/thread.cc",
-    "lib/thread_local.h",
-    "lib/thread_local_posix.cc",
-    "lib/thread_local_win.cc",
-    "mutex.h",
-    "run_loop.h",
-    "run_loop_handler.h",
-    "thread.h",
-  ]
-
-  deps = [
-    "//mojo/public/cpp/bindings:callback",
-    "//mojo/public/cpp/system",
-  ]
-
-  if (is_win) {
-    # See crbug.com/342893:
-    sources -= [
-      "lib/mutex.cc",
-      "lib/thread.cc",
-      "mutex.h",
-      "thread.h",
-    ]
-  }
-}