In the TV app 1 or in the Videos app, you can delete movies and TV shows that you've downloaded to your device. If you see a download icon . next to your purchased content, the item is stored in the cloud, not on your device. read more
Then select the TV show you want to delete, and click on it. Step 4: Tap "Downloaded" > "Remove Download". Then the downloaded TV shows can be removed from your devices. read more