chore: 删除已弃用的文件

pkg/core/app.py

@@ -4,7 +4,6 @@ import logging
 import asyncio
 
 from ..qqbot import manager as qqbot_mgr
-from ..openai import manager as openai_mgr
 from ..openai.session import sessionmgr as llm_session_mgr
 from ..openai.requester import modelmgr as llm_model_mgr
 from ..openai.sysprompt import sysprompt as llm_prompt_mgr
@@ -21,8 +20,6 @@ from ..pipeline import stagemgr
 class Application:
     im_mgr: qqbot_mgr.QQBotManager = None
 
-    llm_mgr: openai_mgr.OpenAIInteract = None
-
     cmd_mgr: cmdmgr.CommandManager = None
 
     sess_mgr: llm_session_mgr.SessionManager = None