$OpenBSD$

Prevent build from calling out to the internet.

--- doc/conf.py.orig	Sat Nov  7 15:14:03 2015
+++ doc/conf.py	Sat Nov  7 15:14:10 2015
@@ -31,7 +31,6 @@ import os
 # ones.
 extensions = [
     'sphinx.ext.autodoc',
-    'sphinx.ext.intersphinx',
 ]
 
 # Add any paths that contain templates here, relative to this directory.
