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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def remove_client(self, client_identifier):
 """Remove a client."""

        new_clients = self.clients
        new_clients.remove(client_identifier)
        yield from self._server.group_clients(self.identifier, new_clients)
        _LOGGER.info('removed %s from %s', client_identifier, self.identifier)
        self._server.client(client_identifier).callback()
        self.callback()