You mean thread? Lock thread closes the htread,but you cannot remove threads or posts.

You could edit your post and delete what you said and write '' Post Deleted '' that would do pretty much the job

@Lord0Pichacu
You cannot remove post or close post. Only edit post. You can edit post to say "Post Deleted."

Post deleted.

@Lord0Pichacu
You see easy.
Edit you post you want to delete and this is it.