def deregister_instances(self, instances):
        if isinstance(instances, str) or isinstance(instances, unicode):
            instances = [instances]
        new_instances = self.connection.deregister_instances(self.name, instances)
        self.instances = new_instances
Remove instances from this load balancer. Removing instances that are
dataset/ETHPy150Open darcyliu/storyboard/boto/ec2/elb/loadbalancer.py/LoadBalancer.deregister_instances