Docs: remove dead example

[humitos]

Builds are failing due to a warning of a broken link.

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📚 Documentation previews 📚

• User's documentation (docs): https://docs--11047.org.readthedocs.build/en/11047/

• Developer's documentation (dev): https://dev--11047.org.readthedocs.build/en/11047/

[ericholscher]

It probably makes sense to remove most of these intersphinx callouts. They add a lot of overhead to the build and not for much value unless we're linking a lot (eg. for Python docs, this might make sense).