Remove the import_zone script

This commit removes the older import_zone script to avoid accidential
usage.

import_zone

@@ -1,21 +0,0 @@
-set -x
-domain=$1
-now=$(date +"%Y%m%d_%H%M%S")
-pdnsutil list-zone $1 > $1.$now
-grep -v SOA $1 >$1.new
-grep SOA $1.$now >> $1.new
-pdnsutil load-zone $1 $1.new 
-pdnsutil increase-serial $1
-mysqldump powerdns > powerdns.dump.$now
-
-echo "From: Nameserver NS2 <root@ns2.cacert.org>" > mail.txt
-echo "To: critical-admin@cacert.org" >> mail.txt
-echo "Subject: Update of zone $1" >> mail.txt
-#echo "$1 has now the following zonefile-data:" >>mail.txt
-pdnsutil list-zone $1 > $1.now
-echo >>mail.txt
-diff -u0 -b $1.$now $1.now >>mail.txt
-echo " ------------------------- " >> mail.txt
-pdnsutil list-zone $1 >> mail.txt
-
-cat mail.txt | ssmtp -6 critical-admin@cacert.org