/// <summary>
 /// 删除二级类目
 /// </summary>
 /// <param name="Gadmin">商品管理员对象</param>
 /// <returns>是否删除成功</returns>
 public bool DeleteSecondClass(GA Gadmin, SecondClassDm second)
 {
     return(Gadmin.DeleteSecondclassdm(second));
 }