Holy Diver is their biggest song, it's always going to be in their set. It's like Metallica taking out Enter Sandman, or AC/DC taking out Back in Black. It's possible and has happened before, but that's a rarity.
That said, killer setlist!
That Drummer Guy Presents:
Tuesdays and Thursdays from 5-9pm Eastern on http://www.metalnationradio.com