[Calendars] Remove Concluded Courses from the List

Problem statement:

When I go to the Calendar, I continue seeing all my past enrollments (concluded courses) in the list of Course Calendars. This causes a problem when I'm trying to scroll through the list to find a course calendar. I don't understand the purpose of having all these old courses (we have YEARS of courses) listed in the Calendar.

Proposed solution:

When a course concludes, it should no longer appear in the list of Course Calendars. In the same way that the Inbox is no longer useable when a course concludes, the calendars also should disappear.

User role(s):

admin,instructor,student,observer