Former Atlanta Falcons quarterback Taylor Heinicke has officially announced his retirement from the NFL. The Collins Hill (Lawrenceville, GA) graduate made the news official on his personal Instagram account, thanking the players, coaches, and teams who supported him.  "For 25 years, I had the pleasure to play this great sport of football," Heinicke wrote on Instagram. "It has taught me a lot, not only about myself but about life as well. Many ups and downs throughout the years, but the ups outweigh the downs tenfold. Never in my wildest dreams did I think I would've been able to live this life,” Heinicke wrote.  “​​Thank you to all who have supported me in this journey. Thank you to all who have believed in me. And thank you to those who gave me the opportunity to live out my childhood dream. Excited for this next chapter of my life!” Heinicke, 33, became a fan favorite during his improbable seven-year career, spending one season with the Falcons.…