Remove a preview background file from a project template. The preview background file is not deleted. You must be an administrator.
DELETE
/data/project-templates/{project_template_id}/preview-background-files/{preview_background_file_id}
curl \
--request DELETE '/api/data/project-templates/a24a6ea4-ce75-4665-a070-57453082c250/preview-background-files/a24a6ea4-ce75-4665-a070-57453082c250' \
--header "Authorization: $API_KEY"