更改一下菜单权限，将删除渠道的 delete 改为 remove：

ChannelController.java

@PreAuthorize("hasPermission('tienchin:channel:remove')")
@Log(title = "渠道管理", businessType = BusinessType.DELETE)
@DeleteMapping("/{channelIds}")
AjaxResult remove(@PathVariable Object[] channelIds) {
    return toAjax(iChannelService.deleteChannelByIds(channelIds));
}

IChannelService.java

/**
 * 删除渠道
 *
 * @param channelIds 渠道ID
 * @return int {@code 0} 失败 {@code 1} 成功
 * @author BNTang
 * @since 2023/09/03 10:48:51
 */
int deleteChannelByIds(Object[] channelIds);

ChannelServiceImpl.java

@Override
public int deleteChannelByIds(Object[] channelIds) {
    UpdateWrapper<Channel> channelQueryWrapper = new UpdateWrapper<>();
    channelQueryWrapper.lambda()
            .set(Channel::getDelFlag, "2")
            .in(Channel::getChannelId, channelIds);

    return update(channelQueryWrapper) ? 1 : 0;
}