nhs_central is crown org and also we do not update org type while

updating service anymore.

tests/app/dao/test_services_dao.py

@@ -389,7 +389,7 @@ def test_get_all_user_services_should_return_empty_list_if_no_services_for_user(
 
 @freeze_time('2019-04-23T10:00:00')
 def test_dao_fetch_live_services_data(sample_user):
-    org = create_organisation(organisation_type='crown')
+    org = create_organisation(organisation_type='nhs_central')
     service = create_service(go_live_user=sample_user, go_live_at='2014-04-20T10:00:00')
     template = create_template(service=service)
     service_2 = create_service(service_name='second', go_live_at='2017-04-20T10:00:00', go_live_user=sample_user)
@@ -427,7 +427,7 @@ def test_dao_fetch_live_services_data(sample_user):
     # checks the results and that they are ordered by date:
     assert results == [
         {'service_id': mock.ANY, 'service_name': 'Sample service', 'organisation_name': 'test_org_1',
-            'organisation_type': 'crown', 'consent_to_research': None, 'contact_name': 'Test User',
+            'organisation_type': 'nhs_central', 'consent_to_research': None, 'contact_name': 'Test User',
             'contact_email': 'notify@digital.cabinet-office.gov.uk', 'contact_mobile': '+447700900986',
             'live_date': datetime(2014, 4, 20, 10, 0), 'sms_volume_intent': None, 'email_volume_intent': None,
             'letter_volume_intent': None, 'sms_totals': 2, 'email_totals': 1, 'letter_totals': 1,

tests/app/service/test_rest.py

@@ -696,31 +696,6 @@ def test_update_service_flags(client, sample_service):
     assert set(result['data']['permissions']) == set([LETTER_TYPE, INTERNATIONAL_SMS_TYPE])
 
 
-@pytest.mark.parametrize("org_type, expected",
-                         [("central", None),
-                          ("local", False),
-                          ("nhs_central", False),
-                          ("nhs_local", False),
-                          ("emergency_service", False),
-                          ("school_or_college", False),
-                          ("other", None)])
-def test_update_service_sets_crown_based_on_org_type(client, sample_service, org_type, expected):
-    sample_service.crown = None
-    data = {
-        'organisation_type': org_type,
-    }
-    auth_header = create_authorization_header()
-
-    resp = client.post(
-        '/service/{}'.format(sample_service.id),
-        data=json.dumps(data),
-        headers=[('Content-Type', 'application/json'), auth_header]
-    )
-    result = resp.json
-    assert resp.status_code == 200
-    assert result['data']['crown'] is expected
-
-
 @pytest.mark.parametrize('field', (
     'volume_email',
     'volume_sms',