Remove vestigate HUDSON_PUBLISH_DOCS reference

This isn't actually used and is a leftover from a thing we did
seven years ago that survives today through copy-pasta.

Change-Id: Ib5ded031edfc8021809d8fd50663f48b90518a39

doc/source/conf.py

@@ -50,10 +50,6 @@ extensions = ['sphinx.ext.autodoc',
 
 # Add any paths that contain templates here, relative to this directory.
 templates_path = []
-if os.getenv('HUDSON_PUBLISH_DOCS'):
-    templates_path = ['_ga', '_templates']
-else:
-    templates_path = ['_templates']
 
 # The suffix of source filenames.
 source_suffix = '.rst'