Revert of Make the notification builder more XPC friendly

chrome/browser/ui/cocoa/notifications/notification_common.gyp

Index: chrome/browser/ui/cocoa/notifications/notification_common.gyp
diff --git a/chrome/browser/ui/cocoa/notifications/notification_common.gyp b/chrome/browser/ui/cocoa/notifications/notification_common.gyp
deleted file mode 100644
index bac5e4bd1681ca7ae186b1414924525a23aeb663..0000000000000000000000000000000000000000
--- a/chrome/browser/ui/cocoa/notifications/notification_common.gyp
+++ /dev/null
@@ -1,20 +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.
-
-{
-'targets': [
-{
-  # GN version: //chrome/browser/ui/notifications:common
-  'target_name': 'notification_common',
-  'type': 'static_library',
-    'include_dirs': [
-      '<(DEPTH)',
-    ],
-  'sources': [
-    'notification_builder_mac.h',
-    'notification_builder_mac.mm',
-  ],
-},
-],
-}