func RemoveLatency() error {
	ifces, err := GetDefaultInterfaces()
	if err != nil {
		return err
	}
	for ifce := range ifces {
		_, err = exec.Command("/bin/sh", "-c", fmt.Sprintf("sudo tc qdisc del dev %s root netem", ifce)).Output()
		if err != nil {
			return err
		}
	}
	return nil
}
func RemoveLatency() error {
	ifces, err := GetDefaultInterfaces()
	if err != nil {
		return err
	}
	for ifce := range ifces {
		_, err = exec.Command("/bin/sh", "-c", fmt.Sprintf("sudo tc qdisc del dev %s root netem", ifce)).Output()
		if err != nil {
			return err
		}
	}
	return nil
}
// RemoveLatency resets latency configurations.