style: remove unwanted import from spiders main init file

scrapling/spiders/__init__.py

@@ -1,18 +1,16 @@
-from .spider import Spider, SessionConfigurationError, LogCounterHandler
 from .request import Request
-from .result import CrawlStats, CrawlResult
+from .result import CrawlResult
+from .scheduler import Scheduler
 from .engine import CrawlerEngine
 from .session import SessionManager
-from .scheduler import Scheduler
+from .spider import Spider, SessionConfigurationError
 from scrapling.engines.toolbelt.custom import Response
 
 __all__ = [
     "Spider",
     "SessionConfigurationError",
-    "LogCounterHandler",
     "Request",
     "CrawlerEngine",
-    "CrawlStats",
     "CrawlResult",
     "SessionManager",
     "Scheduler",