Fix boot error from voyage-util

If using alix board 6d?, the third LED is not controlled.

Edit /etc/init.d/voyage-util, comment out the following lines:

echo netdev > /sys/class/leds/alix\:3/trigger
echo eth0 > /sys/class/leds/alix\:3/device_name
echo "link tx rx" > /sys/class/leds/alix\:3/mode