Deleting a CPanel theme
You can delete a CPanel theme when it is no longer required. Make sure that no users are using this theme before you delete it.
Note: If any users have themes that are automatically updated, they will reappear on this list. To successfully delete these themes, you need to remove the following script: /scripts/postupcp.
To delete a CPanel theme:
Click on the Delete a CPanel Theme link in the Themes menu.
Click on the link to the theme that you want to delete.