# File rbot/plugins/remind.rb, line 56
  def del_reminder(who, subject=nil)
    if(subject)
      if(@reminders.has_key?(who) && @reminders[who].has_key?(subject))
        @bot.timer.remove(@reminders[who][subject])
        @reminders[who].delete(subject)
      end
    else
      if(@reminders.has_key?(who))
        @reminders[who].each {|k,v|
          @bot.timer.remove(v)
        }
        @reminders.delete(who)
      end
    end
  end