Removes the IsReadingListEnabled flags

ios/chrome/browser/ui/tools_menu/tools_menu_view_controller.mm

 // 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 "ios/chrome/browser/ui/tools_menu/tools_menu_view_controller.h"
 
 #include <stdint.h>
 
 #include "base/ios/ios_util.h"
 #import "base/ios/weak_nsobject.h"
 #include "base/logging.h"
 #include "base/mac/objc_property_releaser.h"
 #include "base/mac/scoped_nsobject.h"
 #include "base/metrics/field_trial.h"
-#include "components/reading_list/core/reading_list_switches.h"
 #include "components/strings/grit/components_strings.h"
 #include "ios/chrome/browser/experimental_flags.h"
 #import "ios/chrome/browser/ui/animation_util.h"
 #import "ios/chrome/browser/ui/commands/UIKit+ChromeExecuteCommand.h"
 #include "ios/chrome/browser/ui/commands/ios_command_ids.h"
 #import "ios/chrome/browser/ui/reading_list/reading_list_menu_notification_delegate.h"
 #import "ios/chrome/browser/ui/reading_list/reading_list_menu_notifier.h"
 #import "ios/chrome/browser/ui/tools_menu/reading_list_menu_view_item.h"
 #import "ios/chrome/browser/ui/tools_menu/tools_menu_configuration.h"
 #import "ios/chrome/browser/ui/tools_menu/tools_menu_constants.h"
@@ skipping 594 matching lines @@
 
 - (void)unreadCountChanged:(NSInteger)unreadCount {
   [[self readingListCell] updateBadgeCount:unreadCount animated:YES];
 }
 
 - (void)unseenStateChanged:(BOOL)unseenItemsExist {
   [[self readingListCell] updateSeenState:unseenItemsExist animated:YES];
 }
 
 @end