old_contents: class BotAI(object):
  
      def __init__(self):
          pass
  
      def set_nickname(self, nickname):
          self.nickname = nickname
  
      def respond(self, sender_nickname, message):
          return None
  
  
  class ConnectorMount(type):
      """This metaclass will ensure that any Connector classes defined can
      found later.
      """
  
      def __init__(cls, name, bases, attrs):
          if not hasattr(cls, 'connectors'):
              cls.connectors = []
          else:
              cls.connectors.append(cls)
  
  
  class Connector(object):
      """A basic chat type connector.
      """
      name = 'generic'
  
      def __init__(self):
          self.botais = []
  
      def add_botai(self, botai):
          self.botais.append(botai)
  
      def join_chatroom(self, roomname):
          pass
  
      def run_forever(self):
          pass
  
new_contents: class BotAI(object):
  
      def __init__(self):
          pass
  
      def set_nickname(self, nickname):
          self.nickname = nickname
  
      def respond(self, sender_nickname, message):
          return None
  
  
  class Connector(object):
      """A basic chat type connector.
      """
      name = 'generic'
  
      def __init__(self):
          self.botais = []
  
      def add_botai(self, botai):
          self.botais.append(botai)
  
      def join_chatroom(self, roomname):
          pass
  
      def run_forever(self):
          pass
  
subject: Remove unused class.