Do you have too much wood?
Well fear not! The simple wood void is here!
It's actually just a bunch of burner inserters in a loop.
Removes about one wood every 2 seconds, or 30 every minute. If you need more (or actually less) just stamp another blueprint.
(Also works for any other burnable fuel)
Edit: Now only destroys wood if you have more than 3000 in your logistics system