Thanks for the documentation updates.

The preview documentation has now been torn down - reopening this PR will republish it.

It's a good question. Versions back to 4.0 are listed as compatible with 4.4 LTS on https://neo4j.com/developer/kb/neo4j-supported-versions/ but I don't now whether that in itself creates a requirement for the docs for these versions to be published alongside current and supported versions.

I don't think it would be a problem if they were removed from the version selector but still available (which they would be). Anyone already using an older version who wants to use the docs could probably get to the correct URL. This change would remove 4.2 and 4.3 from the version selector from each driver, and earlier versions would be available as they are now (ie published as the single 'Driver manual').

Docs for those earlier versions can be accessed from the links in https://neo4j.com/docs/reference/docs-archive/#_neo4j_drivers

The official position is

Generally, we support (as in provide fixes for) all non-expired LTS versions as well as the latest major version if the user is willing to update the minor. Currently, 4.4 and 5.28 are LTS versions. 4.4. is likely to go out of the LTS window soon.
We'll likely not actively break older versions in the near future (e.g., by removing the require protocol support from the latest server)... But that's it. We won't fix it if a user stumbles over an issue with those.

So I'll merge this PR to make drivers more uniform with other docsets.