Billionaire investor Carl Icahn is moving to Miami next year — and his employees who don’t like it will be let go without any severance, The Post has learned. Icahn quietly informed the staff of his publicly traded Icahn Enterprises that he’ll be shuttering its offices in New York City and White Plains on March 31, and immediately re-opening in Florida’s Magic City the next day. “My employees have always been very important to the company, so I’d like to invite you all to join me in Miami,” he wrote in a May 17 letter obtained by The Post. To sweeten the deal, Icahn promised that everyone who makes the move will be ... (full story)