fix imports in tests

Author: fsbraun

tests/test_admin.py

@@ -1,8 +1,8 @@
 import decimal
 
-from django.contrib.auth import get_user_model
 from django.contrib.admin.sites import site
-from django.test import TestCase, RequestFactory
+from django.contrib.auth import get_user_model
+from django.test import RequestFactory, TestCase
 from django.urls import reverse
 
 from djangocms_form_builder.models import FormEntry

tests/test_settings.py

@@ -1,7 +1,5 @@
 import os
 
-from cms.utils.compat import DJANGO_3_1
-
 
 class DisableMigrations(dict):
     def __contains__(self, item):