buffing

I don't know how you could buff them out, but honestly, I would just forget about it because it will probably just get scratched again as you ride it.  Now if it's a new board and has serious scratches, you should maybe try to exchange it.

You say you can't feel them but you can see them.  Did you buy a Burton second?  If so, it might be a misprint in the topsheet graphics and not scratches.

if its just scratches of rubber marks I would get some citrus cleaner and use that or googone. In the past I have used scratch remover from Meguirs and that worked good.

I say leave it and who cares..;)

joe 

if theres a gloss finish on your board just leave it there cause you'll end up taking the gloss off unevenly and it'll look like crap (which is what i did)
if its still bothering you, you could try a wet paper towel with some toothpaste.  its a trick from taking scratches out of cars.  note: after a while, the treated area will dull faster than the stock paint job, im talking years though.  if youre not keeping the board for that long, i suppose it shouldnt be a problem.