Sure, here are the steps to remove shows from your Apple Podcast library:

1. Open the Podcasts app on your iPhone or iPad.
2. Tap "Library" at the bottom of the screen.
3. You'll see a list of all the shows you've subscribed to or added to your library. Find the show you want to remove.
4. Tap on the show to open its details page.
5. On the show's page, tap the "..." (three dots) in the upper-right corner.
6. A menu will appear. Tap "Remove".
7. A confirmation message will appear, asking if you're sure you want to remove the show from your library. Tap "Remove" to confirm.

Please note that removing a show from your library won't unsubscribe you from it, but it will remove downloaded episodes and it won't appear in your library anymore. If you want to unsubscribe from a show, you can do so by going to the show's page, tapping on the "..." (three dots), and then choosing "Unsubscribe".