(ci) remove obsolete references #287

Job	Run time
get-non-cloud-notebooks	4s
notebooks-except-cloud (docs/sphinx/source/getting-started-pyvespa.ipynb)	14m 18s
notebooks-except-cloud (docs/sphinx/source/reads-writes.ipynb)	6m 8s
notebooks-except-cloud (docs/sphinx/source/advanced-configuration.ipynb)	10m 12s
notebooks-except-cloud (docs/sphinx/source/examples/evaluating-with-snowflake-arctic-embed.ipynb)	7m 34s
notebooks-except-cloud (docs/sphinx/source/examples/lightgbm-with-categorical.ipynb)	5m 41s
notebooks-except-cloud (docs/sphinx/source/examples/pyvespa-examples.ipynb)	7m 22s
notebooks-except-cloud (docs/sphinx/source/examples/cross-encoders-for-global-reranking.ipynb)	5m 36s
notebooks-except-cloud (docs/sphinx/source/examples/multi-vector-indexing.ipynb)	7m 37s
notebooks-except-cloud (docs/sphinx/source/examples/feed_performance.ipynb)	8m 29s
notebooks-except-cloud (docs/sphinx/source/examples/lightgbm-with-categorical-mapping.ipynb)	5m 38s
notebooks-except-cloud (docs/sphinx/source/application-packages.ipynb)	7m 3s
notebooks-except-cloud (docs/sphinx/source/query.ipynb)	5m 17s
	1h 30m 59s

Provide feedback