Resolved quality errors

common/djangoapps/track/tests/test_contexts.py

-from unittest import TestCase  # lint-amnesty, pylint: disable=missing-module-docstring
+# lint-amnesty, pylint: disable=missing-module-docstring
+from unittest import TestCase
 
 import ddt
 

common/djangoapps/track/views/tests/test_views.py

-import ddt  # lint-amnesty, pylint: disable=missing-module-docstring
+# lint-amnesty, pylint: disable=missing-module-docstring
+import ddt
 import six
 from django.contrib.auth.models import User  # lint-amnesty, pylint: disable=imported-auth-user
 from django.test.client import RequestFactory