Try the "X" button next to the message. If it's not visible, then this
means other messages have been posted in the same topic and in this
case you can't remove it.

Try asking a mod to delete it.

OK, thanks everyone.

You're welcome, I guess.

I did try

But tankz

Please actually try to find the answer yourself before coming to the
Questions Section. It's sometimes easy to find. ;3

Do you
see where the "!" icon is (that's for reportings posts, by the way)? If
its your own post, then right next to that icon should be an "x" icon.
If you click there, you can delete your post.