docs: Remove statistics param for AdaptivePlaywrightCrawler example in HTTP crawlers guide (#1671)

### Description

- follow-up for #1637

Author: Mantisus

docs/guides/code_examples/http_crawlers/selectolax_adaptive_run.py

@@ -2,10 +2,8 @@
 
 from crawlee.crawlers import (
     AdaptivePlaywrightCrawler,
-    AdaptivePlaywrightCrawlerStatisticState,
     AdaptivePlaywrightCrawlingContext,
 )
-from crawlee.statistics import Statistics
 
 from .selectolax_parser import SelectolaxLexborParser
 
@@ -15,8 +13,6 @@ async def main() -> None:
         max_requests_per_crawl=10,
         # Use custom Selectolax parser for static content parsing.
         static_parser=SelectolaxLexborParser(),
-        # Set up statistics with AdaptivePlaywrightCrawlerStatisticState.
-        statistics=Statistics(state_model=AdaptivePlaywrightCrawlerStatisticState),
     )
 
     @crawler.router.default_handler