Remove several context processors we don't use

We're not using any of the injected values these context processors
provide in our templates, so remove them from our default config.
Signed-off-by: Dan McGee <dan@archlinux.org>

settings.py

@@ -49,9 +49,6 @@
 TEMPLATE_CONTEXT_PROCESSORS = (
     'django.contrib.auth.context_processors.auth',
     'django.core.context_processors.debug',
-    'django.core.context_processors.i18n',
-    'django.core.context_processors.media',
-    'django.core.context_processors.static',
     'django.contrib.messages.context_processors.messages',
     'main.context_processors.secure',
 )