Remove ContributorTestMixin #85
Remove ContributorTestMixin #85

mozilla-services/location-leaderboard,mozilla-services/location-leaderboard,JaredKerim-Mozilla/leaderboard-server,JaredKerim-Mozilla/leaderboard-server,JaredKerim-Mozilla/leaderboard-server,mozilla-services/location-leaderboard,mozilla-services/location-leaderboard,mozilla-services/location-leaderboard,JaredKerim-Mozilla/leaderboard-server,JaredKerim-Mozilla/leaderboard-server