taobao.crm.shopvip.cancel 卖家取消店铺vip的优惠
        
        此接口用于取消VIP优惠

def cancel(self, session):
        '''taobao.crm.shopvip.cancel 卖家取消店铺vip的优惠
        
        此接口用于取消VIP优惠'''
        request = TOPRequest('taobao.crm.shopvip.cancel')
        self.create(self.execute(request, session))
        return self.is_success