Delete the logo that was used and that will revert the banner for you, as if nothing had ever been saved in the first place. (Only perform these steps this if the Logo is not being used anywhere else in your system)

To delete the banner logo if the Logo IS NOT being used across the site, navigate to:
  1. Core > Settings > Application style settings > Logos and Seals
  2. Click the Trashcan icon for the undesired logo
  3. Click Confirm

To delete the banner logo if the Logo IS being used all across the site, navigate to:
  1. Core > Settings > Application style settings > Logos and Seals
  2. Click + Add New
  3. Name the Logo
  4. Click Select From Your Computer or Drag the Image onto  "Drag Image Here"
  5. Click Save and Close
  6. Navigate to Core > Settings > Application style settings > Web App Style
  7. Under Banner Logo, click Change
  8. Mark the Select button on the name of the newly added logo above
  9. Click Save & Close
  10. Navigate to Core > Settings > Application style settings > Logos and Seals
  11. Click the Trashcan icon for the undesired logo, you will get the following message " WARNING: This image is the Banner Logo for your web application.
  12. Are you sure you want to remove this Logo/Seal from your site? "
  13. Click Confirm