do not document something obvious if other similar things are not documented the same way

powerdns/rc.powerdns

@@ -25,8 +25,6 @@
 
 %daily -u @l_susr@
     opServiceEnabled powerdns || exit 0
-
-    #   rotate logfile
     shtool rotate -f \
         -n${powerdns_log_numfiles} -s${powerdns_log_minsize} -d \
         -z${powerdns_log_complevel} -o@l_rusr@ -g@l_rgrp@ -m644 \