chore: fix test cases

acceptance_tests/mixins.py

@@ -1,24 +1,9 @@
-from unittest import skip
-
-from analyticsclient.client import Client
-
 from acceptance_tests import (
-    API_AUTH_TOKEN,
-    API_SERVER_URL,
     COURSE_API_KEY,
     COURSE_API_URL,
     DASHBOARD_FEEDBACK_EMAIL,
-    DASHBOARD_SERVER_URL,
     DOC_BASE_URL,
-    ENABLE_AUTO_AUTH,
     ENABLE_COURSE_API,
-    LMS_PASSWORD,
-    LMS_USERNAME,
-    SOAPBOX_GLOBAL_MESSAGE,
-    SOAPBOX_INACTIVE_MESSAGE,
-    SOAPBOX_SINGLE_PAGE_MESSAGE,
-    SOAPBOX_SINGLE_PAGE_PATH,
-    SUPPORT_EMAIL,
 )
 from common.clients import CourseStructureApiClient