Pancake Milkshake can be uninstalled through the Messages application:
- Open the Messages app
- Open a new message or existing conversation
- Open the App Drawer
- Scroll all the way to the right and tap "More"
- Locate Pancake Milkshake under More Apps (NOTE: If listed under Favorites, Swipe left over the game and select "Remove from Favorites" first)
- Swipe left over the game to reveal the "Delete" option
- Tap "Delete" to remove the app