Click on the album folder under the tree structure on the left-hand side of the screen to select the album whose you are about to change
Click on 
button on the left-hand side of the Collection Album screen over the
album tree structure to view the menu
From the menu click on [Remove Album] to delete the Album. A warning message appears "You are about to delete this album, it's contents and any sub albums that it may contain. Do you wish to continue?"
Click (Yes button) to proceed with the deletion, otherwise click (No button) to abort.