Don't delete SSO settings (#1411)

misago/conf/migrations/0006_remove_sso_settings.py

@@ -1,24 +0,0 @@
-# Generated by Django 3.2.15 on 2022-09-27 18:45
-
-from django.db import migrations
-
-sso_settings = (
-    "enable_sso",
-    "sso_public_key",
-    "sso_private_key",
-    "sso_url",
-)
-
-
-def delete_settings(apps, _):
-    Setting = apps.get_model("misago_conf", "Setting")
-    Setting.objects.filter(setting__in=sso_settings).delete()
-
-
-class Migration(migrations.Migration):
-
-    dependencies = [
-        ("misago_conf", "0005_add_sso_settings"),
-    ]
-
-    operations = [migrations.RunPython(delete_settings)]