Albums in Photos

You cannot delete the albums that come pre-set with the Photos app such as People, Recents, Videos, etc. You can delete albums that you’ve created. This applies to both, manual albums that you added images to, and smart albums that compile images according to rules you selected. Only the albums are deleted, not the images inside of them.

There is currently a bug in Photos that doesn’t properly reset flags for images, so it is recommended to remove all images from manual albums before deleting the album itself.

Right-click on a mouse, or two-finger click on a trackpad, then select Delete Album from the pop up contextual menu.

Right-click and Option-click are both always worth trying.

You’re welcome.