This is a good question because you have a dare and it is a touch screen so whenever you go to the app it loads it. I believe what you need to do is go to your media center then go into options I believe there is an option there to remove a subscription. what I would do is call customer service and have a rep take you through the steps. also through your my Verizon you should be able to go through manuals in motion it might be in there or your user manual.
Go into the Media Center>Browse and Download and click on the gear on the right hand side of the app. That will open a menu and you can select Cancel Subscription.