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: I1cd098c1f5744695d3694791750e4770f8d39dca

doc/source/conf.py

@@ -73,10 +73,6 @@ todo_include_todos = True
 
 # 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'