It will take a lot more than the ipad to kill Flash, it will take people to build alternate tools that allow easy creation of interactive content... not a device that doesn't support the standard (standard is in italics because it isn't technically the standard, but it's what lots of people use, the majority anyway)
An example of this from today: http://www.reddit.com/r/programming/comments/h1mc6/interacti... and then http://www.reddit.com/r/programming/comments/h1mc6/interacti...