try to make pylint happy

dav_events/views/actions.py

@@ -23,7 +23,7 @@ class OneClickActionRunView(generic.DetailView):
             login(self.request, user)
             logger.info('Logged in via OneClickAction: %s', user.username)
             messages.success(self.request,
-                             _(u'Benutzer angemeldet: %(username)s') % {'username': user.username})
+                             _('Benutzer angemeldet: %(username)s') % {'username': user.username})
 
         if 'location' in result:
             return HttpResponseRedirect(result['location'])