Удалить из списка var listes = project.Lists["Listzapros"] дубли

public static void RemoveDublicates(this SPList list)
        {
            //SPListItemCollection items = list.Items;
            SPListItemCollection items = list.Items;
            int count = items.Count;
            for (int i = count - 1; i >= 0; i--)
            {
                for (int j = i - 1; j >= 0; j--)
                {
                    if (items[i]["Title"].ToString() == items[j]["Title"].ToString())
                    {
                        items[i].Delete();
                        break;
                    }
                }
            }
        }