跨域bug修复2

backend/services/auth_service.py

@@ -146,8 +146,6 @@ class AuthService:
             if student:
                 result["student_no"] = student["student_no"]
                 result["student_name"] = student["name"]
-                result["class_id"] = student["class_id"]
-                result["class_name"] = student["class_name"]
                 result["total_points"] = student["total_points"]
         
         # 获取管理员角色
@@ -155,7 +153,6 @@ class AuthService:
             admin_role = await AdminRoleModel.get_by_user_id(user_id)
             if admin_role:
                 result["role"] = admin_role["role_type"]
-                result["class_id"] = admin_role["class_id"]
         
         return result