HOLLYWOOD — Jada Pinkett Smith’s revelation in her book “Worthy” that she and husband Will Smith have lived apart for seven years didn’t endear her to readers, and her book is being considered a “flop.” It’s been outsold so far by Arnold Schwarzenegger’s “Be Useful: Seven Tools for Life,” Britney Spears’ “The Woman in Me” and even John Stamos’ memoir “If You Would Have Told Me.”