Can an admin clean up the sticky topics like poctHUB?

Is there an admin that can remove the "sticky" or "pinned" topics that haven't been updated in years? There are several for poctHUB and the website links don't work. "Getting the most out of this groupsite" is also probably unnecessary.

Call me a little OCD, but seeing those unhelpful discussions at the top of the forum every time I log in makes me feel a tiny bit crazy. LOL.