fix(nslord): disable master mode (brought hopeless NOTIFY attempts only)

nslord/conf/pdns.conf.var

@@ -5,8 +5,6 @@ default-soa-edit=INCREMENT-WEEKS
 default-soa-mail=get.desec.io
 default-soa-name=set.an.example
 default-ttl=${DESECSTACK_NSLORD_DEFAULT_TTL}
-master=yes
-only-notify=
 setgid=pdns
 setuid=pdns
 soa-minimum-ttl=60