Stop being so respectful to the spammer by calling it CP.
It is not illegal content or CP, it is plain SPAM which has nothing to do with gurochan.
And NOBODY likes spam not even serial killers or child rapists.

Also the better thing to do than just deleting spam posts is to report them to file hosts so that spammer will be required to reupload everything back and links posted on other sites will also stop working.
Just deleting the spam post is not very effective because it is easy to post it back.