What did the bees die of?  Was it FOUL BROOD?  If you DON'T know FOR SURE, I
would destroy the entire colony and honey

Of course, you can take a chance, hope it is NOT foul brood, but if you are
wrong, you have just inoculated ALL of your equipment and your other bees,
and their honey with foul brood spores.

If you are sure of no foul brood, the honey is perfectly good to use for a
new colony of bees.  The new bees will quickly clean up the green mold.

Hope I have helped.

George Imirie
Certified EAS Master Beekeeper