remove tutor from the errata FE list (#1587)

Author: mwvolo

api/views.py

@@ -100,7 +100,7 @@ def errata_fields(request):
     if request.GET.get('field', None) == 'resources':
         for field, verbose in ERRATA_RESOURCES:
             # This is not my favorite way to do this but we need to keep the data on existing errata
-            if field != 'OpenStax Concept Coach' and field != 'Rover by OpenStax':
+            if field != 'OpenStax Concept Coach' and field != 'Rover by OpenStax' and field != 'OpenStax Tutor':
                 response.append({'field': field, 'verbose': verbose})
 
     return JsonResponse(response, safe=False)