Nightbirde has wowed the judges and fans of NBC’s “America’s Got Talent”… but her journey on the show is ending. The 30-year-old singer has announced she’s leaving “AGT” as she battles cancer. “Since my audition, my health has taken a turn for the worse and the fight with cancer is demanding all of my energy and attention,” she writes on Instagram. “Stay with me, I’ll be better soon. I’m planning my future, not my legacy.”