refactor: remove departmentId from Class entity

apps/admin/src/pages/IntegrationConfig/index.tsx

@@ -236,13 +236,7 @@ const IntegrationConfigPage: React.FC = () => {
       const userIds = checkedKeys
         .filter((k) => String(k).startsWith('user-'))
         .map((k) => String(k).replace('user-', ''));
-      const deptKeys = checkedKeys.filter((k) => String(k).startsWith('dept-'));
-      const deptId = deptKeys.length > 0
-        ? Number(String(deptKeys[0]).replace('dept-', ''))
-        : undefined;
-
-      setImporting(true);
-      await api.post('/classes', { ...values, dingUserIds: userIds, departmentId: deptId });
+      await api.post('/classes', { ...values, dingUserIds: userIds });
       message.success('班级创建成功');
       setClassModalOpen(false);
       classForm.resetFields();