Update faiss_impl.py

lightrag/kg/faiss_impl.py

@@ -20,12 +20,7 @@ from lightrag.base import (
 if not pm.is_installed("faiss"):
     pm.install("faiss")
 
-try:
+import faiss
-    import faiss
-except ImportError as e:
-    raise ImportError(
-        "`faiss` library is not installed. Please install it via pip: `pip install faiss`."
-    ) from e
 
 
 @final