fix ci files

InvenTree/InvenTree/ci_render_js.py

@@ -1,9 +1,8 @@
 """
-Pull rendered copies of the templated 
+Pull rendered copies of the templated
 """
 
-from django.http import response
-from django.test import TestCase, testcases
+from django.test import TestCase
 from django.contrib.auth import get_user_model
 
 import os