Donald Trump wants to be a king, and those who don’t vote are going to help him make it happen, a legal expert said Monday. Former federal prosecutor Joyce Vance, a frequent critic of the former president, chose to use Christmas in part to warn people about what a future Trump presidency could possibly entail. “An important insight about voting, to share with folks around you who say Biden is too old or not their perfect candidate: a decision not to vote will have as much force in determining the outcome of the 2024 election as much as voting in it will,” Vance wrote in a post on Substack. “Th…