You picked the fruit but the infection is still eating the heartwood of the tree:
Common Questions About Berkeley’s Polypore How do I get rid of Bondarzewia berkeleyi?
Nothing works to get rid of the fungus pathogen in the tree. Fungicides don’t work. You can remove the fruiting body of the mushroom, but that does nothing to prevent the mycelium from sprouting new growth in following years. Keeping the tree healthy can prolong its life but eventually it will probably succumb. mushroom-appreciation.com/berkeleys-polypore.html