'Deregisters an Amazon RDS instance.
**Required Permissions**: To use this action, an IAM user must
have a Manage permissions level for the stack, or an attached
policy that explicitly grants permissions. For more
information on user permissions, see `Managing User
Permissions`_.
:type rds_db_instance_arn: string
:param rds_db_instance_arn: The Amazon RDS instance\'s ARN.'

def deregister_rds_db_instance(self, rds_db_instance_arn):

    params = {'RdsDbInstanceArn': rds_db_instance_arn}
    return self.make_request(action='DeregisterRdsDbInstance', body=json.dumps(params))
