Remove register endpoint

The register endpoint is not used any longer, the invite endpoint is used instead.

gregui/tests/api/test_invite_guest.py

@@ -9,19 +9,24 @@ from gregui.api.views.invitation import CreateInvitationView
 
 @pytest.mark.django_db
 def test_invite_guest(client, user_sponsor, unit_foo, role_type_foo):
-    data = {'first_name': 'Foo', 'last_name': 'Bar', 'email': 'test@example.com', 'role': {
-        'start_date': '2019-08-06',
-        'end_date': '2019-08-10',
-        'orgunit_id': unit_foo.id,
-        'type': role_type_foo.id
-    }}
-    url = reverse('gregui-v1:invite-create')
+    data = {
+        "first_name": "Foo",
+        "last_name": "Bar",
+        "email": "test@example.com",
+        "role": {
+            "start_date": "2019-08-06",
+            "end_date": "2019-08-10",
+            "orgunit_id": unit_foo.id,
+            "type": role_type_foo.id,
+        },
+    }
+    url = reverse("gregui-v1:invite-create")
 
     all_persons = Person.objects.all()
     assert len(all_persons) == 0
 
     factory = APIRequestFactory()
-    request = factory.post(url, data, format='json')
+    request = factory.post(url, data, format="json")
     force_authenticate(request, user=user_sponsor)
 
     view = CreateInvitationView.as_view()
@@ -32,5 +37,5 @@ def test_invite_guest(client, user_sponsor, unit_foo, role_type_foo):
     all_persons = Person.objects.all()
 
     assert len(all_persons) == 1
-    assert all_persons[0].first_name == 'Foo'
-    assert all_persons[0].last_name == 'Bar'
+    assert all_persons[0].first_name == "Foo"
+    assert all_persons[0].last_name == "Bar"