Make all style checkers happy

src/tests/agenda/test_agenda_schedule_export.py

@@ -10,7 +10,6 @@
 from django.test import override_settings
 from django.urls import reverse
 from django_scopes import scope
-# from jsonschema import validate
 from lxml import etree
 
 from pretalx.agenda.tasks import export_schedule_html
@@ -144,6 +143,7 @@ def test_schedule_frab_json_export(
 
     assert regular_content != orga_content
 
+    # from jsonschema import validate
     # validate(instance=regular_content, schema=schedule_schema_json)
     # validate(instance=orga_content, schema=schedule_schema_json)