This removes special logging for course course-v1:UQx+BUSLEAD5x+2T2019
as part of an edX investigation (EDUCATOR-4568 in their internal JIRA).
That issue was closed on 2021-01-08 by Mat Carter with the comment:
> Aged out, closing. If this issue continues, please create a new
> ticket optionally referencing this one.
(Note that Mat has since left edX/2U.)
The EDUCATOR-4602 ticket was created to track the cleanup of this
logging code.
8409a7c023