It's still there, but only by means of links you may still have. I checked for myself, and the Wizards' boards page links you to these boards here. I happened to have an old thread Favorited, and the link I have from the Favorites folder still works. I'd imagine they'll disappear altogether within some time. They're just forwarding everything to this now.
Even Wizpog.com brings you to this page instead of the the 'Gym v.2.0.
Just some last minute forwarding so people know it's been relocated before they disappear from the face of the earth.