By Dan Lyons He missed the entire 2021 season after a career year in ’20. Steelers defensive end Stephon Tuitt announced his retirement from the NFL on Wednesday afternoon, making the decision official via Twitter. “With respect to the Steelers organization, my teammates, and coaches I would like to officially announce that I have come to the decision to retire from the NFL,” Tuitt wrote in his statement. “I am thankful to have had the opportunity to represent the city of Pittsburgh for the past eight seasons, and am blessed to leave this game with my health. “After the tragic loss of my broth…