debian: remove call to "init-script update" in postinst (#46595)

The same operations are now done by the automatic call to "restart" by
the default Debian scripts.

debian/authentic2-multitenant.postinst

@@ -37,7 +37,6 @@ case "$1" in
         chown $AUTHENTIC_USER:$AUTHENTIC_GROUP $AUTHENTIC_HOME/tenants \
             /var/lib/$NAME/collectstatic \
             /var/log/$NAME
-        /etc/init.d/$NAME update
         ;;
     triggered)
         su -s /bin/sh -c "$MANAGE_SCRIPT hobo_deploy --redeploy" $AUTHENTIC_USER

debian/authentic2.postinst

@@ -99,8 +99,6 @@ case "$1" in
             $AUTHENTIC_HOME/media \
             $AUTHENTIC_HOME/templates \
             /var/log/$NAME \
-
-        /etc/init.d/$NAME update
         ;;
 
     reconfigure|abort-upgrade|abort-remove|abort-deconfigure)