Update mongo_impl.py

lightrag/kg/mongo_impl.py

@@ -25,7 +25,6 @@ if not pm.is_installed("pymongo"):
 if not pm.is_installed("motor"):
     pm.install("motor")
 
-try:
 from motor.motor_asyncio import (
     AsyncIOMotorClient,
     AsyncIOMotorDatabase,
@@ -33,10 +32,6 @@ try:
 )
 from pymongo.operations import SearchIndexModel
 from pymongo.errors import PyMongoError
-except ImportError as e:
-    raise ImportError(
-        "`motor, pymongo` library is not installed. Please install it via pip: `pip install motor pymongo`."
-    ) from e
 
 config = configparser.ConfigParser()
 config.read("config.ini", "utf-8")