I don't think this has anything to do with Apple killing Google Maps. In that case, Apple could build an alternative relatively easily (acquisition and so on). In this case, noone has an alternative to YouTube. If this is Apple sticking it to Google again, I'll be very surprised.
"Our license to include the YouTube app in iOS has ended, customers can use YouTube in the Safari browser and Google is working on a new YouTube app to be on the App Store."
Edit: Apple has issued a statement (http://www.theverge.com/2012/8/6/3223775/apple-youtube-ios6)
"Our license to include the YouTube app in iOS has ended, customers can use YouTube in the Safari browser and Google is working on a new YouTube app to be on the App Store."