The bees will take care of it. They can eat fermented honey. Dark comb is great in the brood chamber (in my opinion). I think the queen likes to lay in it and you can see the eggs really well. They will clean everything up. The only reasons I throw things like this away is if it's really full of wax moth damage, as evidenced by the webs and wax feces, or it's really crooked and not in the center of the comb, or it's got too big of gaps or too much drone comb.