For Ubuntu versions that use systemd (15.04 and later) use:
systemctl disable service
This will do the job. It will disable the service and won't restart after a reboot. To temporarily enable simply start the service. Not enable.
To find the service name use
Other commands are:
systemctl start service - Use it to start a service. Does not persist after reboot
systemctl stop service - Use it to stop a service. Does not persist after reboot
systemctl restart service - Use it to restart a service
systemctl status service - Shows the status of a service. Tells whether a service is currently running.
systemctl enable service - Turns the service on, on the next reboot or on the next start event. It persists after reboot.
systemctl disable service - Turns the service off on the next reboot or on the next stop event. It persists after reboot.