if payload.channel_id == 614467771866021944 or 469197781308014593:

此行将始终被评估为True，因为469197781308014593始终为True，如注释中所述，在这种情况下，您应使用in关键字。

        if payload.channel_id == 614467771866021944:
            channel = client.get_channel(614467771866021944)
        if payload.channel_id == 469197781308014593:
            channel = client.get_channel(469197781308014593)

可以简称为

        channel = client.get_channel(payload.channel_id)

最终代码：

@client.event
async def on_raw_reaction_add(payload):
    if payload.channel_id in [614467771866021944,469197781308014593]:
        if payload.emoji.name == "dev":
            channel = client.get_channel(payload.channel_id)
            message = await channel.fetch_message(payload.message_id)
            emoji = get(channel.guild.emojis,name=payload.emoji.name)
            reaction = get(message.reactions,emoji=emoji)
            async for user in reaction.users():
                if user == message.author:
                    await reaction.remove(user)