organize imports

smash/web/tests/forms/test_voucher_forms.py

@@ -3,9 +3,8 @@ import logging
 from django.urls import reverse
 
 from web.forms import VoucherForm
-from web.models import WorkerStudyRole, Voucher
+from web.models import Voucher
 from web.models.constants import VOUCHER_STATUS_USED
-from web.models.worker_study_role import ROLE_CHOICES_VOUCHER_PARTNER
 from web.tests import LoggedInWithWorkerTestCase
 from web.tests.functions import create_study_subject, create_voucher_type, format_form_field, create_voucher, \
     create_worker, create_voucher_partner