How do I remove a drawer from Whitney desk (Pottery Barn)
I'm having the same problem with the PB Bedford desk.  I called the furniture dept. and they said on the drawer slides there's a lever and to push up on the one on the left and down on the one on the right and then pull the drawer out.  The drawer slides in your pic look just like mine, so maybe this will work.  I didn't have any luck, but it seems like a 2-person job.

Hope this helps!