[Lens] Remove value labels flag for vertical displacement

[dej611]

Summary

This PR removes the value label vertical displacement as mentioned in #101573 for Lens bar charts.

Before:

After:

If you are wondering why this feature was enabled to begin with, the reason was that testing with very crowded bar charts the flag was preventing this from happening:

With the flag enabled:

Hopefully this edge case will be taken care from the charts library itself with the new geometry clipped flag: elastic/elastic-charts#1233

Checklist

Delete any items that are not applicable to this PR.

• Any text added follows EUI's writing guidelines, uses sentence case text and includes i18n support
• Documentation was added for features that require explanation or tutorials
• Unit or functional tests were updated or added to match the most common scenarios
• Any UI touched in this PR is usable by keyboard only (learn more about keyboard accessibility)
• Any UI touched in this PR does not create any new axe failures (run axe in browser: FF, Chrome)
• If a plugin configuration key changed, check if it needs to be allowlisted in the cloud and added to the docker list
• This renders correctly on smaller devices using a responsive layout. (You can test this in your browser)
• This was checked for cross-browser compatibility

For maintainers

• This was checked for breaking API changes and was labeled appropriately

[dej611]

@elasticmachine merge upstream

[kibanamachine]

💚 Build Succeeded

• continuous-integration/kibana-ci/pull-request
• Commit: 9987043
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Metrics [docs]

✅ unchanged

History

• 💚 Build #138104 succeeded af8de3b
• 💔 Build #137855 failed 82dcd26

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@elasticmachine merge upstream

[markov00]

Makes sense to me.
The current feature doesn't improve much the readability with smaller bars and can create more problems than benefits.
IMHO is not even a breaking change

[stratoula]

I agree with @markov00 👍

[dej611]

closing this in favour of #106231 which has more options