Removing "Hero Abilities" Button

Level 2
Apr 8, 2006
I know that by giving a hero an ability with only one level and then switching that ability for a stronger version when you want that hero to have it, would be a way to remove the "Hero Abilities" button (the red cross icon in the hero commands), but I was posting this request to see if there's a less troublesome way to do this since the campaign I'm working on has a high level cap and many levels for the abilities the heroes can use. Does anyone know of another way?