feat: Remove OIDC and SSO support

Existing SSO accounts have no local password, so the migration
deactivates them before dropping is_sso_user and the
identity_provider_user table.

server/api/hooks/query-methods/models/IdentityProviderUser.js

@@ -1,23 +0,0 @@
-/*!
- * Copyright (c) 2024 PLANKA Software GmbH
- * Licensed under the Fair Use License: https://github.com/plankanban/planka/blob/master/LICENSE.md
- */
-
-/* Query methods */
-
-const createOne = (values) => IdentityProviderUser.create({ ...values }).fetch();
-
-const getOneByIssuerAndSub = (issuer, sub) =>
-  IdentityProviderUser.findOne({
-    issuer,
-    sub,
-  });
-
-// eslint-disable-next-line no-underscore-dangle
-const delete_ = (criteria) => IdentityProviderUser.destroy(criteria).fetch();
-
-module.exports = {
-  createOne,
-  getOneByIssuerAndSub,
-  delete: delete_,
-};