'Removes server\'s IP from load balancer
:param lb_id: Load balancer ID
:rtype: ``str``
:param server_ip: ID of the server IP
:rtype: ``str``
:return: Instance of load balancer
:rtype: ``dict``'

def ex_remove_server_from_load_balancer(self, lb_id, server_ip):

    response = self.connection.request(action=('/load_balancers/%s/server_ips/%s' % (lb_id, server_ip)), method='DELETE')
    return response.object
