Disable XViewMiddleware, it has been moved in Django 1.6 and it's not

clear whether it's serving a useful purpose
 - Legacy-Id: 6977

Author: OleLaursen

ietf/settings.py

@@ -114,7 +114,6 @@
     'django.contrib.auth.middleware.RemoteUserMiddleware',
     'django.contrib.messages.middleware.MessageMiddleware',
     'django.middleware.http.ConditionalGetMiddleware',
-    'django.middleware.doc.XViewMiddleware',
     'ietf.middleware.SQLLogMiddleware',
     'ietf.middleware.SMTPExceptionMiddleware',
     'ietf.middleware.RedirectTrailingPeriod',