If “Who Killed Woody Allen?” dies, it wouldn’t necessarily be the first Empty Stage show he’s killed. The play was written in response to Allen’s yanking the theater’s rights to his play “Death.” Though “Who Killed” was an act of revenge, Allen comes off mostly unscathed. (Only one Soon-Yi jab.) Maybe he should learn from the past. He wouldn’t want another play: “Who Killed ‘Who Killed Woody Allen?’ "