multiple: rely on asyncio_mode auto in tests (#27200)

libs/community/tests/unit_tests/retrievers/test_you.py

@@ -1,6 +1,5 @@
 from unittest.mock import AsyncMock, patch
 
-import pytest
 import responses
 
 from langchain_community.retrievers.you import YouRetriever
@@ -63,7 +62,6 @@ class TestYouRetriever:
         expected_result = NEWS_RESPONSE_PARSED
         assert results == expected_result
 
-    @pytest.mark.asyncio
     async def test_ainvoke(self) -> None:
         instance = YouRetriever(ydc_api_key="test_api_key")