Revert of Make the notification builder more XPC friendly

chrome/browser/ui/cocoa/notifications/BUILD.gn

Index: chrome/browser/ui/cocoa/notifications/BUILD.gn
diff --git a/chrome/browser/ui/cocoa/notifications/BUILD.gn b/chrome/browser/ui/cocoa/notifications/BUILD.gn
deleted file mode 100644
index 80b46a7de6923a4e9590b404aebfaa71225da1ac..0000000000000000000000000000000000000000
--- a/chrome/browser/ui/cocoa/notifications/BUILD.gn
+++ /dev/null
@@ -1,16 +0,0 @@
-# Copyright 2016 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.
-
-static_library("common") {
-  sources = [
-    "notification_builder_mac.h",
-    "notification_builder_mac.mm",
-  ]
-
-  deps = [
-    "//base",
-    "//chrome:strings",
-    "//ui/base:base",
-  ]
-}