'Remove input fixed IP from input server instance.
For a full list of available parameters, please refer to the official
API reference:
https://developer.openstack.org/api-ref/compute/#remove-disassociate-fixed-ip-removefixedip-action'

def remove_fixed_ip(self, server_id, **kwargs):

    return self.action(server_id, 'removeFixedIp', **kwargs)
