Justin Timberlake is saying “Bye Bye Bye” to any amends he made in recent years, on the heels of ex-girlfriend Britney Spears apologizing for airing their dirty laundry in her memoir. Just before launching into a performance of “Cry Me a River” at a one-night engagement at Irving Plaza in Manhattan on Wednesday, the “SexyBack” singer, 42, told the crowd he wanted to take the opportunity to apologize, only to tack on, “…To absolutely f–king nobody,” according to footage making the rounds online. It’s believed to largely be a nod to ex-girlfriend Spears, also 42, who over the weekend said she wa…