Try this remote ALT+R and paste it there!

Code:
ON !*:TEXT:*#*:#: {
  if ($me !isop $chan) { return }
  if ($nick isop $chan) { return }
  ban -ku3600 $chan $nick 5 Channel Spamming Into This Channel Is NOT Allowed! - Stay OUT! - (Duration: 1 hour)
}


WARNING: To work this you MUST be an channel operator (@) and the spam user must not be an operator to the channel (@).

- Thanks!