At the moment, it is not possible to do so from the app itself, but you may wish to disable app notifications from your phone settings.
- Open your Settings app.
- Tap Notification Center on the left-hand side of your screen.
- Swipe up until you see a list of your apps.
- Find the app you want to turn off notifications for, and tap it.
- Go to Settings > Apps
- Tap the app you want to stop notifications for
- Under notifications, select the setting