You can remove a library item from a local library when you no longer need it.

To remove a library item from a library, you can call the delete method on the Item object and pass the library item ID as an argument. The item content is asynchronously removed from the storage.

You cannot remove items from a subscribed library. If you remove an item from a local library, the item is removed from the subscribed library when you perform a synchronization task on the subscribed library item.