fix: ci

Author: RaoHai

server/insight/service/activity.py

@@ -1,4 +1,3 @@
-import datetime
 import requests
 from typing import List, Dict
 

server/tests/utils/test_insight.py

@@ -1,7 +1,5 @@
 import unittest
 from unittest.mock import patch, Mock
-from collections import defaultdict
-
 from utils.insight import get_data