NEW YORK (AP) — Carlos Beltrán is out as manager of the New York Mets before a single game, the latest fallout from the Houston Astros’ sign-stealing scandal that has rocked Major League Baseball. The Mets announced the decision Thursday in a news release, saying Beltrán and the team “agreed to mutually part ways.” The move came two days after Boston cut ties with manager Alex Cora, who was…