Revert "fix: allow admin to bypass @bot check in group chat"

This reverts commit bfd8f9af92.

src/process.py

@@ -385,8 +385,8 @@ class OpenClawBridge(BasePlugin):
             return "ok"
 
         # ===== 所有用户正常对话（整合后的统一流程）=====
-        # 群聊消息没有@机器人时，不调LLM（管理员除外）
-        if self.ctx.group is not None and not self._is_authorized(sender_id):
+        # 群聊消息没有@机器人时，不调LLM
+        if self.ctx.group is not None:
             at_me = f"[CQ:at,qq={self.ctx.rebot_id}]" in self.ctx.raw_message
             if not at_me:
                 logger.info(f"Group chat without @bot from {sender_id}, skipped LLM call")