you can not... the copyright is a required part of the mod.
As I said earlier, I'm open to being paid for my work in exchange for the removal of copyright, although no one ever chose that solution and I'm clearly not advertising it, because I think I should both be paid and have the copyright, lol.
Seriously, it pains me even more that the YouTube hack no longer works. I'm nearly ashamed of having a copyright notice at this point, lol.
Maybe I'll release a new version with just a "HD" link. Which will do the same as clicking on the HD button inside the video, only it'll resize the video at the same time, since YT doesn't do that (and can't do that) on external embeds.