How can I remove the site logo? I want to remove the logo from my site.

I found some instructions on Disabling the Drupal logo in your Drupal 8 theme. My problem is that the instructions say to unselect Logo in the toggle section of the theme settings page. I only get four options: User pictures in posts, User pictures in comments, User verification status in comments, and Shortcut icon.

I've checked in two sites. One has the vanilla Bartik theme, and the other has a subtheme of Bartik with no changes other than CSS.

How can I remove the logo?
Uncheck the Use the default logo supplied by the theme option you find under the Logo image settings section. Don't forget to clear the cache.