Remove the workaround for broken handling of NOTIFY with SOA
requested to merge 3086-remove-workaround-for-server-mishandling-notify-with-soa-record-in-answer-section into main
In 2000, old BIND instances (BIND 8?) would return FORMERR if the SOA is included in the NOTIFY.
Remove the workaround that detected the state and resent the NOTIFY without SOA record.
Closes #3086 (closed)