Remember what I said about “The Expendables” trumpeting an era of video-game-style movie violence? Well, “The Expendables 2” (2012) is the same thing all over again, except Sylvester Stallone didn’t even try to come up with an interesting subplot this time. The all-star team from Action Hero Retirement Home (Holy shit! Chuck Norris!) takes a testosterone ride to some godforsaken locale for a mercenary mission that comes with a side order of righteous revenge. As before, people don’t just die, they go down in a hail of bullets and a mist of arterial spray. That’s all you need to know.