Minutes after the last-place D-backs handed the Mets their latest defeat, a 9-0 thumping Thursday that sunk them to .500 for the first time since April, manager Terry Collins walked into the Citi Field press conference room. He took one question from a reporter and replied with a three-minute, 14-second rant that questioned the Mets’ effort level, finishing with: “And that’s all I have to say. I’m done.”