MusicBot - Remove bot from server by ID

bot.py

    async def cmd_leaveserver(self, id):
        """
        Usage:
            {command_prefix}leaveserver <id>

        Removes the bot from a specific server via ID
        """
        target = self.get_server(id)
        if target is None:
            raise exceptions.CommandError('The server {} does not exist'.format(id), expire_in=30)
        else:
            await self.leave_server(target)
            return Response("Left server successfully: {0.name} ({0.id})".format(target))