How to delete DSL and ISDN entries

I've moved my computer and no longer have a DSL or ISDN connection to my computer. I have removed the spare ethernet and ISDN cards but I can't see how using YAST to remove the entries for DSL and ISDN. When I boot up the system is still setting up the dsl and isdn interfaces. Anyone know what has to be done to remove these entries and stop the dsl and isdn interfaces from being setup. Regards, Jethro