[New: openFATE 314594] Drop ISDN support

Feature added by: Thorsten Kukuk (kukuk) Feature #314594, revision 1 Title: Drop ISDN support Requested by: Thorsten Kukuk (kukuk) Partner organization: openSUSE.org Description: ISDN package still depends on SuSEconfig, there is nobody who is able to adjust the code, ISDN is getting less and less important. -- openSUSE Feature: https://features.opensuse.org/314594