Clean up pylint errors to get diff-quality to pass

openedx/core/djangoapps/django_comment_common/models.py

@@ -1,4 +1,4 @@
-# pylint: disable=missing-docstring,unused-argument,model-missing-unicode
+# pylint: disable=missing-docstring,unused-argument
 
 
 import json

openedx/core/djangoapps/geoinfo/middleware.py

@@ -41,7 +41,6 @@ class CountryMiddleware(MiddlewareMixin):
             reader = geoip2.database.Reader(settings.GEOIP_PATH)
             try:
                 response = reader.country(new_ip_address)
-                # pylint: disable=no-member
                 country_code = response.country.iso_code
             except geoip2.errors.AddressNotFoundError:
                 country_code = ""

openedx/core/djangoapps/site_configuration/tests/test_middleware.py

@@ -4,9 +4,6 @@ Test site_configuration middleware.
 """
 
 
-from mock import patch
-
-from django.conf import settings
 from django.test import TestCase
 from django.test.client import Client
 from django.test.utils import override_settings