Drop ‘preview service name’ page

This page:
- confused users in research
- didn’t communicate what it was intended to (eg the generated email address,
  how your service name would appear in messages)

This commit removes the page so that after typing in the service name the user
is sent straight to the dashboard for their new service.

tests/app/main/views/test_add_service.py

@@ -14,7 +14,7 @@ def test_get_should_render_add_service_template(app_,
             client.login(api_user_active)
             response = client.get(url_for('main.add_service'))
             assert response.status_code == 200
-            assert 'Add a new service' in response.get_data(as_text=True)
+            assert 'Which service do you want to set up notifications for?' in response.get_data(as_text=True)
 
 
 def test_should_add_service_and_redirect_to_next_page(app_,
@@ -31,48 +31,8 @@ def test_should_add_service_and_redirect_to_next_page(app_,
                 url_for('main.add_service'),
                 data={'name': 'testing the post'})
             assert response.status_code == 302
-            assert response.location == url_for('main.add_from_address', _external=True)
-
-
-def test_should_confirm_add_service(
-    app_,
-    mock_login,
-    mock_get_services,
-    api_user_active,
-    mock_get_user,
-    mock_get_user_by_email
-):
-    with app_.test_request_context():
-        with app_.test_client() as client:
-            client.login(api_user_active)
-            with client.session_transaction() as session:
-                session['service_name'] = 'Renew Your Pet Passport'
-            response = client.get(url_for('main.add_from_address'))
-            assert response.status_code == 200
-            assert 'Preview your service name' in response.get_data(as_text=True)
-            assert 'Renew Your Pet Passport' in response.get_data(as_text=True)
-            assert 'renew.your.pet.passport@notifications.service.gov.uk' in response.get_data(as_text=True)
-
-
-def test_should_add_service_after_confirmation(
-    app_,
-    mock_login,
-    mock_create_service,
-    mock_get_services,
-    api_user_active,
-    mock_get_user,
-    mock_get_user_by_email
-):
-    with app_.test_request_context():
-        with app_.test_client() as client:
-            client.login(api_user_active)
-            with client.session_transaction() as session:
-                session['service_name'] = 'Renew Your Pet Passport'
-            response = client.post(url_for('main.add_from_address'))
-            assert response.status_code == 302
             assert response.location == url_for('main.service_dashboard', service_id=101, _external=True)
             assert mock_create_service.called
-            assert mock_get_services.called
 
 
 def test_should_return_form_errors_when_service_name_is_empty(app_,