Oh, looks like Millennium Partners was playing that fun developer game where they try to see how much they can get away with. The Globe reports they've agreed to take 70 feet off their proposed Winthrop Square tower because of FAA concerns about the building getting in the way of a Logan Airport flight path - something they and the city and probably half the known universe knew about months ago, but they still filed plans for a building that was taller than the FAA would like.