ash: Remove a few unused includes.

ash/system/user/accounts_detailed_view.h

 // 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.
 
 #ifndef ASH_SYSTEM_USER_ACCOUNTS_DETAILED_VIEW_H_
 #define ASH_SYSTEM_USER_ACCOUNTS_DETAILED_VIEW_H_
 
 #include <map>
 #include <string>
 
 #include "ash/system/tray/tray_details_view.h"
 #include "ash/system/tray/view_click_listener.h"
 #include "ash/system/user/login_status.h"
 #include "ash/system/user/user_accounts_delegate.h"
 #include "ash/system/user/user_view.h"
 #include "base/macros.h"
 #include "grit/ash_strings.h"
-#include "ui/base/l10n/l10n_util.h"
 #include "ui/views/controls/button/button.h"
 #include "ui/views/controls/label.h"
 
 namespace ash {
 
 class TrayUser;
 
 namespace tray {
 
 // This detailed view appears after a click on the primary user's card when the
@@ skipping 32 matching lines @@
   views::View* add_user_button_;
   std::map<views::View*, std::string> delete_button_to_account_id_;
 
   DISALLOW_COPY_AND_ASSIGN(AccountsDetailedView);
 };
 
 }  // namespace tray
 }  // namespace ash
 
 #endif  // ASH_SYSTEM_USER_ACCOUNTS_DETAILED_VIEW_H_