Not needed for manpages

--- a/docs/source/conf.py
+++ b/docs/source/conf.py
@@ -45,7 +45,6 @@ extensions = [
 #    'sphinx.ext.coverage',
     'sphinx.ext.viewcode',
     'sphinx.ext.intersphinx',
-    'sphinx_mdinclude',
 ]
 
 # autodoc