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/models/IdentityProviderUser.js

@@ -1,46 +0,0 @@
-/*!
- * Copyright (c) 2024 PLANKA Software GmbH
- * Licensed under the Fair Use License: https://github.com/plankanban/planka/blob/master/LICENSE.md
- */
-
-/**
- * IdentityProviderUser.js
- *
- * @description :: A model definition represents a database table/collection.
- * @docs        :: https://sailsjs.com/docs/concepts/models-and-orm/models
- */
-
-module.exports = {
-  attributes: {
-    //  ╔═╗╦═╗╦╔╦╗╦╔╦╗╦╦  ╦╔═╗╔═╗
-    //  ╠═╝╠╦╝║║║║║ ║ ║╚╗╔╝║╣ ╚═╗
-    //  ╩  ╩╚═╩╩ ╩╩ ╩ ╩ ╚╝ ╚═╝╚═╝
-
-    issuer: {
-      type: 'string',
-      isNotEmptyString: true,
-      allowNull: true,
-    },
-    sub: {
-      type: 'string',
-      isNotEmptyString: true,
-      allowNull: true,
-    },
-
-    //  ╔═╗╔╦╗╔╗ ╔═╗╔╦╗╔═╗
-    //  ║╣ ║║║╠╩╗║╣  ║║╚═╗
-    //  ╚═╝╩ ╩╚═╝╚═╝═╩╝╚═╝
-
-    //  ╔═╗╔═╗╔═╗╔═╗╔═╗╦╔═╗╔╦╗╦╔═╗╔╗╔╔═╗
-    //  ╠═╣╚═╗╚═╗║ ║║  ║╠═╣ ║ ║║ ║║║║╚═╗
-    //  ╩ ╩╚═╝╚═╝╚═╝╚═╝╩╩ ╩ ╩ ╩╚═╝╝╚╝╚═╝
-
-    userId: {
-      model: 'User',
-      required: true,
-      columnName: 'user_id',
-    },
-  },
-
-  tableName: 'identity_provider_user',
-};

server/api/models/User.js

@@ -142,11 +142,6 @@
  *           default: byDefault
  *           description: Default sort order for projects display (personal field)
  *           example: byDefault
- *         isSsoUser:
- *           type: boolean
- *           default: false
- *           description: Whether the user is SSO user (private field)
- *           example: false
  *         isDeactivated:
  *           type: boolean
  *           default: false
@@ -238,7 +233,7 @@ const LANGUAGES = [
 ];
 
 // TODO: find better way to handle apiKeyHash and apiKeyCreatedAt
-const PRIVATE_FIELD_NAMES = ['email', 'apiKeyPrefix', 'apiKeyHash', 'isSsoUser', 'apiKeyCreatedAt'];
+const PRIVATE_FIELD_NAMES = ['email', 'apiKeyPrefix', 'apiKeyHash', 'apiKeyCreatedAt'];
 
 const PERSONAL_FIELD_NAMES = [
   'language',
@@ -256,11 +251,6 @@ const INTERNAL = {
   role: Roles.ADMIN,
 };
 
-const OIDC = {
-  id: '_oidc',
-  role: Roles.ADMIN,
-};
-
 module.exports = {
   Roles,
   EditorModes,
@@ -270,7 +260,6 @@ module.exports = {
   PRIVATE_FIELD_NAMES,
   PERSONAL_FIELD_NAMES,
   INTERNAL,
-  OIDC,
 
   attributes: {
     //  ╔═╗╦═╗╦╔╦╗╦╔╦╗╦╦  ╦╔═╗╔═╗
@@ -378,11 +367,6 @@ module.exports = {
       allowNull: true,
       columnName: 'terms_signature',
     },
-    isSsoUser: {
-      type: 'boolean',
-      defaultsTo: false,
-      columnName: 'is_sso_user',
-    },
     isDeactivated: {
       type: 'boolean',
       defaultsTo: false,