Remove the "role of users being enrolled" field from Instructor Dashboard
This dropdown was implemented for whitelabel sites (https://openedx.atlassian.net/browse/WL-1473), and is no longer needed on edX.org. Here is the dropdown in question:
The current impact is instructor-confusion. We field the occasional author who believes that selecting a role also adds additional staff privileges. This is not true, and the instructor later needs to revise the membership permissions.
PR up here for review:
LGTM, thanks Sarina.