refactor: remove unused imports.

common/djangoapps/student/tests/factories.py

@@ -5,7 +5,6 @@ from datetime import datetime
 from uuid import uuid4
 
 import factory
-import six
 from django.contrib.auth.models import AnonymousUser, Group, Permission
 from django.contrib.contenttypes.models import ContentType
 from factory.django import DjangoModelFactory

common/djangoapps/student/tests/test_admin_views.py

@@ -8,7 +8,6 @@ from unittest.mock import Mock
 
 import ddt
 import pytest
-import six
 from django.contrib.admin.sites import AdminSite
 from django.contrib.auth.models import User  # lint-amnesty, pylint: disable=imported-auth-user
 from django.forms import ValidationError

common/djangoapps/student/tests/test_course_listing.py

@@ -7,7 +7,6 @@ by reversing group name formats.
 import unittest
 
 from unittest import mock
-import six
 from django.conf import settings
 from django.test.client import Client
 from milestones.tests.utils import MilestonesTestCaseMixin

common/djangoapps/student/tests/test_email.py

@@ -15,7 +15,6 @@ from django.test.client import RequestFactory
 from django.urls import reverse
 from django.utils.html import escape
 from edx_toggles.toggles.testutils import override_waffle_flag
-from six import text_type
 
 from common.djangoapps.edxmako.shortcuts import marketing_link
 from common.djangoapps.student.email_helpers import generate_proctoring_requirements_email_context

common/djangoapps/student/tests/test_enrollment.py

@@ -8,7 +8,6 @@ from unittest.mock import patch
 
 import ddt
 import pytest
-import six
 from django.conf import settings
 from django.urls import reverse
 from edx_toggles.toggles.testutils import override_waffle_flag

common/djangoapps/student/tests/test_long_username_email.py

+""" Test case for longer user emails."""
 import json
 
 from django.test import TestCase

common/djangoapps/student/tests/test_views.py

@@ -11,7 +11,6 @@ from datetime import timedelta  # lint-amnesty, pylint: disable=unused-import
 from unittest.mock import patch
 
 import ddt
-import six
 from completion.test_utils import CompletionWaffleTestMixin, submit_completions_for_testing
 from django.conf import settings
 from django.test import TestCase