You can't convert raster images to vectors without using trace bitmap function (which is ugly) or tracing the animation by your hand, frame-by-frame.
Plus, this animation wasn't made in flash at all but in... some gif animation program that used only 2 colors, I forgot the name but whatever.
Why would you need to get that animation into vectors?
Anyway, you still can Import this file just to play it in the flash animation with the file menu...