Delete video from course about page

Hi,

I'm trying to delete the about video from this course:

https://publisher.edx.org/courses/595dfbce-4c42-4947-87ac-aa202b4eabb4

But so far I haven't been able to. Just deleting it from Publisher and saving the changes doesn't seem to do anything (after saving and refreshing publisher, the video link is still there).

I've also tried deleting the video, then doing a minor edit in another field (such as adding a space in the Short Description), and then saving the changes, but that doesn't seem to work either.

It also doesn't look like I can delete the video directly from Discovery, but I could be missing something: https://discovery-internal.edx.org/admin/course_metadata/courserun/?q=cmr

Could you take a look?

Thanks!

Related code:
https://github.com/edx/course-discovery/blob/50f7391618c34336611face8181b1b8fc60b71e2/course_discovery/apps/api/v1/views/courses.py#L346-L349