auth: remove supurios notify after a supermaster domain was created

auth: remove supurios notify after a supermaster domain was created

From the regression tests:

Nov 30 13:30:54 Received NOTIFY for test.com from 127.0.0.1 for which we are not authoritative, trying supermaster
Nov 30 13:30:54 Received NOTIFY for example.com from 127.0.0.1 which is not a master (Refused)
Nov 30 13:30:54 Received NOTIFY for test.com from 127.0.0.1 for which we are not authoritative, trying supermaster
Nov 30 13:30:55 Created new slave zone 'test.com' from supermaster 127.0.0.1
Nov 30 13:30:55 Database error trying to create test.com for potential supermaster 127.0.0.1: Database error trying to insert new domain 'test.com.': Error while retrieving SQLite query results: column name is not unique
Nov 30 13:30:55 1 slave domain needs checking, 0 queued for AXFR
Nov 30 13:30:55 Received serial number updates for 1 zone, had 0 timeouts
Nov 30 13:30:55 Domain 'test.com' is stale, master serial 2005092501, our serial 0
Nov 30 13:30:55 Initiating transfer of 'test.com' from remote '127.0.0.1'
Nov 30 13:30:55 No new unfresh slave domains, 0 queued for AXFR already, 1 in progress
Nov 30 13:30:55 Starting AXFR of 'test.com' from remote 127.0.0.1:53
Nov 30 13:30:55 AXFR of domain 'test.com' initiated by 127.0.0.2
Nov 30 13:30:55 AXFR of domain 'test.com' allowed: TSIG signed request with authorized key 'tsig.com' and algorithm 'hmac-md5.sig-alg.reg.int'
Nov 30 13:30:55 AXFR started for 'test.com'
Nov 30 13:30:55 AXFR of domain 'test.com' to 127.0.0.2 finished
Nov 30 13:30:55 AXFR of 'test.com' from remote 127.0.0.1:53 done
Nov 30 13:30:55 Backend transaction started for 'test.com' storage
Nov 30 13:30:55 AXFR done for 'test.com', zone committed with serial number 2005092501
Nov 30 13:30:55 Removed from notification list: 'test.com' to 127.0.0.2:53 (was acknowledged)
Nov 30 13:30:55 Received unsuccessful notification report for 'example.com' from 127.0.0.2:53, error: Query Refused
Nov 30 13:30:55 Removed from notification list: 'example.com' to 127.0.0.2:53 Query Refused
Nov 30 13:30:55 Removed from notification list: 'test.com' to 127.0.0.2:53 (was acknowledged)
Nov 30 13:30:55 Received spurious notify answer for 'test.com' from 127.0.0.2:53
Nov 30 13:30:55 Received unsuccessful notification report for 'test.com' from 127.0.0.2:53, error: Server Failure
Nov 30 13:30:55 Received spurious notify answer for 'test.com' from 127.0.0.2:53