def delete_bookmark(user, usage_key):
 bookmark = Bookmark.objects.get(user=user, usage_key=usage_key)
 bookmark.delete()
 _track_event('edx.bookmark.removed', bookmark)

def delete_bookmark ( user , usage_key ) : bookmark = Bookmark . objects . get ( user = user , usage_key = usage_key ) bookmark . delete ( ) _track_event ( 'edx.bookmark.removed' , bookmark )
delete a bookmark .