Resolve "Logout of tutors after inactivity"

Closes #22 (closed).

core/tests/test_functional_views.py

 from django.urls import reverse
 from rest_framework.test import (APIRequestFactory, APITestCase,
                                  force_authenticate)
-from core.models import ExamType
-from core.views import get_exam_module, get_user_role
+from core.views import get_user_role
 from util.factories import GradyUserFactory
 
 
@@ -32,19 +31,3 @@ class GetUserRoleTest(APITestCase):
         force_authenticate(self.request, user=self.reviewer.user)
         response = get_user_role(self.request)
         self.assertEqual(response.data['role'], 'Reviewer')
-
-
-class GetExamModuleTest(APITestCase):
-    def test_get_exam_module(self):
-        self.factory = APIRequestFactory()
-        self.user = GradyUserFactory().make_student().user
-        self.request = self.factory.get(reverse('exam-module'))
-        force_authenticate(self.request, user=self.user)
-        self.expected = ExamType.objects.get_or_create(
-            pk=1, defaults={
-                'module_reference': 'Test Exam',
-                'total_score': 100,
-                'pass_score': 50,
-            })[0].module_reference
-        self.response = get_exam_module(self.request)
-        self.assertEqual(self.response.data['exam'], self.expected)