Someone

on *:TEXT:!clearban:#:{

  if ($me isop $chan) && ($nick isop $chan) {

    echo $active Clearing bans on $chan

    var %i = 1, %bans

    while (%i <= $ibl($chan,0)) {

      %bans = %bans $ibl($chan,%i)

      if ($numtok(%bans,32) == $modespl) {

        mode $chan - $+ $str(b,$numtok(%bans,32)) %bans

        %bans = ""

      }

      inc %i

    }

    if (%bans) mode $chan - $+ $str(b,$numtok(%bans,32)) %bans

  }

} 
on *:unban:#:{ 
  if $bnick { .notice $bnick You have been unbanned from $chan } 
}
}