Thank you for using Apple Support Communities.
I understand from your post that you would like to know if you remove a subscriber from a shared album if the subscriber would get a notification. When removing a subscriber, they do not get notified. The following article has more info about removing subscribers:
iCloud Photo Sharing - Apple Support
Best Regards.Remove subscribers or delete an album
As the creator of a shared album, you control access to the album. You can remove subscribers from your album at any time. You can also delete the album at any time. When you delete a shared album, it's automatically removed from all of your devices as well as the devices of all your subscribers. If Public Website was enabled, the shared album will also be removed from the web.
Remove a subscriber
- Open the shared album.
- Go to the People tab.
- Select the subscriber that you want to remove.
- Choose Remove Subscriber.
Delete a shared album
- Open the shared album.
- Go to the People tab.
- Choose Delete Shared Album.
Any photos that were previously saved or downloaded from the shared album to another location, such as the Photos tab, won't be deleted from that location.
