man update-rc.d pisze:When invoked with the remove option, update-rc.d removes any links in the /etc/rcrunlevel.d directories to the script /etc/init.d/name. The script must have been deleted already. If the script is still present then update-rc.d aborts with an error message.
Tymczasowo wyłączyć najprościej chyba za pomocą sysv-rc-conf.