Sylvester Stallone isn’t looking for pity. The action star opened up about a childhood marked by abandonment, violence and an almost total absence of affection in a new interview, telling The New York Times he deliberately left some of the darkest stories out of his book because he didn’t want readers to feel sorry for him. “I didn’t put a lot of stuff in the book because I didn’t want a pity party … but it was insane,” he admitted. After his parent’s divorce, Stallone spent time living with his father in Maryland. He described his father as volatile and physically abusive. “The next thing you know — wham! He had very big hands. You just…