func removeNotificationConfigToGroupsWithTopic(conn *autoscaling.AutoScaling, groups []*string, topic string) error {
	for _, r := range groups {
		opts := &autoscaling.DeleteNotificationConfigurationInput{
			AutoScalingGroupName: r,
			TopicARN:             aws.String(topic),
		}

		_, err := conn.DeleteNotificationConfiguration(opts)
		if err != nil {
			return fmt.Errorf("[WARN] Error deleting notification configuration for ASG \"%s\", Topic ARN \"%s\"", *r, topic)
		}
	}
	return nil
}