disable opensearch generation. It doesn't work.

It references an opensearch.html page in the generated docs which
doesn't exist.

The opensearch.xml file is (properly??) generated in _static, but
referenced in the sitemap at the root not in _static.

Author: rouilj

website/www/conf.py

@@ -171,7 +171,7 @@
 # If true, an OpenSearch description file will be output, and all pages will
 # contain a <link> tag referring to it.  The value of this option must be the
 # base URL from which the finished HTML is served.
-html_use_opensearch = 'https://www.roundup-tracker.org'
+html_use_opensearch = ''
 
 # If nonempty, this is the file name suffix for HTML files (e.g. ".xhtml").
 #html_file_suffix = ''