Revert "Merge pull request #708 from ArnoChenFx/fix-mongo-impl"

This reverts commit ad2a82e5e4, reversing
changes made to 7b238dbc3e.

lightrag/kg/mongo_impl.py

@@ -2,14 +2,11 @@ import os
 from tqdm.asyncio import tqdm as tqdm_async
 from dataclasses import dataclass
 import pipmaster as pm
-import numpy as np
+import np
 
 if not pm.is_installed("pymongo"):
     pm.install("pymongo")
 
-if not pm.is_installed("motor"):
-    pm.install("motor")
-
 from pymongo import MongoClient
 from motor.motor_asyncio import AsyncIOMotorClient
 from typing import Union, List, Tuple