Overall weekend totals plunge 60% from last year as the absence of a “Dune: Part Two”-level hit is felt This time a year ago, the box office was getting a drought-busting weekend thanks to the $82.5 million opening of Warner Bros./Legendary’s “Dune: Part Two.” But Warner’s new release this weekend, “Mickey 17,” isn’t opening to a quarter of that. Industry estimates have Bong Joon-ho’s sci-fi satire opening to just $18.5 million from 3,607 locations after a $7.7 million opening day, a foreboding