Do not reference non-existing index file

The conf.py has
html_use_index = False

Thus no index file is generated - and there wouldn't be content for it.

Remove link to index file from the main page.

Also, remove unused autodoc sphinx extension,
this is not a python code project.

Change-Id: I73e82d2130334bb9a36f8b8bf0452a9eda3652ab

doc/source/conf.py

@@ -29,8 +29,7 @@ from jinja2.utils import Markup
 
 # Add any Sphinx extension module names here, as strings. They can be extensions
 # coming with Sphinx (named 'sphinx.ext.*') or your custom ones.
-extensions = ['sphinx.ext.autodoc',
-              'sphinx.ext.todo',
+extensions = ['sphinx.ext.todo',
               'sphinx.ext.viewcode',
               'oslosphinx'
              ]

doc/source/index.rst

@@ -34,5 +34,4 @@ Contents:
  Indices and tables
 ====================
 
-* :ref:`genindex`
 * :ref:`search`