/// <summary>
 /// Deletes a label for todo item.
 /// </summary>
 /// <param name="userId">User id</param>
 /// <param name="deleteDto">Delete Dto</param>
 /// <returns>True if delete was successful</returns>
 public bool DeleteLabel(int userId, DeleteLabelDto deleteDto)
 {
     return(todoItemRepository.DeleteLabel(userId, deleteDto));
 }