To hide a slide, we can make the visibility private. The slide will still show for users logged in with access to the backend/dashboard of the site but this will be hidden for end users.
  1. Log into the WordPress site.
  2. Navigate to the dashboard.
  3. Select Home Slides.
  4. Click the Edit hyperlink under the slide you would like to hide. 
  5. Under publish, click Edit next to Visibility > Select Private.
  6. Click Ok.
  7. Select Update to save the changes.