Delete deprecated synced notifications code

sync/protocol/sync.proto

 // Copyright (c) 2012 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.
 //
 // Sync protocol for communication between sync client and server.
 
 // Update proto_value_conversions{.h,.cc,_unittest.cc} if you change
 // any fields in this file.
 
 syntax = "proto2";
@@ skipping 98 matching lines @@
   optional NigoriSpecifics nigori = 47745;
   optional ExtensionSpecifics extension = 48119;
   optional AppSpecifics app = 48364;
   optional SessionSpecifics session = 50119;
   optional AutofillProfileSpecifics autofill_profile = 63951;
   optional SearchEngineSpecifics search_engine = 88610;
   optional ExtensionSettingSpecifics extension_setting = 96159;
   optional AppSettingSpecifics app_setting = 103656;
   optional HistoryDeleteDirectiveSpecifics history_delete_directive = 150251;
   optional SyncedNotificationSpecifics synced_notification = 153108;
-  optional SyncedNotificationAppInfoSpecifics synced_notification_app_info =
-      235816;
+  optional SyncedNotificationAppInfoSpecifics synced_notification_app_info = 235816;
   optional DeviceInfoSpecifics device_info = 154522;
   optional ExperimentsSpecifics experiments = 161496;
   optional PriorityPreferenceSpecifics priority_preference = 163425;
   optional DictionarySpecifics dictionary = 170540;
   optional FaviconTrackingSpecifics favicon_tracking = 181534;
   optional FaviconImageSpecifics favicon_image = 182019;
   optional ManagedUserSettingSpecifics managed_user_setting = 186662;
   optional ManagedUserSpecifics managed_user = 194582;
   optional ManagedUserSharedSettingSpecifics managed_user_shared_setting =
       202026;
@@ skipping 830 matching lines @@
     // Currently only meaningful if |error_type| is throttled. If this field
     // is absent then the whole client (all datatypes) is throttled.
     repeated int32 error_data_type_ids = 5;
   }
   optional Error error = 13;
 
   // The new per-client state for this client. If set, should be persisted and
   // sent with any subsequent ClientToServerMessages.
   optional ChipBag new_bag_of_chips = 14;
 };