test: Drop a legacy test.

This test tests whether or not we can load the legacy courseware page if
we have not met prerequisites.  We don't need this anymore because we
are in the process of removing those pages and the default is now to
load the MFE instead.

The underlying checks still happens as a part of the
`_has_access_course` function which calls
`lms/djangoapps/courseware/access.py:_can_view_courseware_with_prerequisites`

lms/djangoapps/courseware/tests/test_access.py

@@ -681,47 +681,6 @@ class AccessTestCase(LoginEnrollmentTestCase, ModuleStoreTestCase, MilestonesTes
         assert bool(access._has_access_course(self.student, 'load_mobile', course)) == student_expected
         assert bool(access._has_access_course(self.staff, 'load_mobile', course)) == staff_expected
 
-    @patch.dict("django.conf.settings.FEATURES", {'ENABLE_PREREQUISITE_COURSES': True, 'MILESTONES_APP': True})
-    def test_courseware_page_unfulfilled_prereqs(self):
-        """
-        Test courseware access when a course has pre-requisite course yet to be completed
-        """
-        pre_requisite_course = CourseFactory.create(
-            org='edX',
-            course='900',
-            run='test_run',
-        )
-
-        pre_requisite_courses = [str(pre_requisite_course.id)]
-        course = CourseFactory.create(
-            org='edX',
-            course='1000',
-            run='test_run',
-            pre_requisite_courses=pre_requisite_courses,
-        )
-        set_prerequisite_courses(course.id, pre_requisite_courses)
-
-        test_password = 't3stp4ss.!'
-        user = UserFactory.create()
-        user.set_password(test_password)
-        user.save()
-        self.login(user.email, test_password)
-        CourseEnrollmentFactory(user=user, course_id=course.id)
-
-        url = reverse('courseware', args=[str(course.id)])
-        response = self.client.get(url)
-        self.assertRedirects(
-            response,
-            reverse(
-                'dashboard'
-            )
-        )
-        assert response.status_code == 302
-
-        fulfill_course_milestone(pre_requisite_course.id, user)
-        response = self.client.get(url)
-        assert response.status_code == 200
-
 
 class UserRoleTestCase(TestCase):
     """