Revert "优化微信同步超时兜底并下沉头像缓存预热"

This reverts commit c3830d905e.

wechat_ipad/errors.py

@@ -33,8 +33,3 @@ class UserLoggedOut(Exception):
 class BanProtection(Exception):
     def __init__(self, *args, **kwargs):
         super().__init__(*args, **kwargs)
-
-
-class RequestTimeoutError(Exception):
-    def __init__(self, *args, **kwargs):
-        super().__init__(*args, **kwargs)