Various coding style fixes

Signed-off-by: Michal Čihař <michal@cihar.com>

weblate/api/routers.py

@@ -56,4 +56,3 @@ class WeblateRouter(routers.DefaultRouter):
                 )
             )
         return '/'.join(result)
-

weblate/api/serializers.py

@@ -25,6 +25,7 @@ from weblate.lang.models import Language
 
 
 class MultiFieldHyperlinkedIdentityField(serializers.HyperlinkedIdentityField):
+    # pylint: disable=W0622
     def get_url(self, obj, view_name, request, format):
         """
         Given an object, return the URL that hyperlinks to the object.

weblate/api/urls.py

@@ -21,7 +21,6 @@
 from __future__ import unicode_literals
 
 from django.conf.urls import url, include
-from rest_framework import routers
 
 from weblate.api.views import (
     ProjectViewSet, ComponentViewSet, TranslationViewSet, LanguageViewSet,

weblate/api/views.py

@@ -18,7 +18,7 @@
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #
 
-from django.shortcuts import render, get_object_or_404
+from django.shortcuts import get_object_or_404
 
 from rest_framework import viewsets