Goal: Remove old course info page from ~2015's shift away from this page. This includes other code no longer in use relating to when we had the course info page (titled "Courseware") as the main course page. Included in this is the accordion that shows the course outline in the sidebar of the course content pages. (Additional details in 2 linked tickets)

Development efforts to update: https://openedx.atlassian.net/browse/TNL-7061

Pull Requests:

• https://github.com/edx/edx-platform/pull/24675
• https://github.com/edx/edx-platform/pull/24676

Additional Info

Original Jira Issue: https://openedx.atlassian.net/browse/DEPR-108

Checklist for tracking this work: https://openedx.atlassian.net/wiki/spaces/AC/pages/3265724867/DEPR-108+Checklist