[stable/spark] deprecating chart

[mattfarina]

Is this a new chart

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What this PR does / why we need it:

Which issue this PR fixes

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Checklist

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• DCO signed
• Chart Version bumped
• Variables are documented in the README.md
• Title of the PR starts with chart name (e.g. [stable/mychartname])

[scottrigby]

Merging manually. Chart is being deprecated. See #24310

[k8s-ci-robot]

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This pull-request has been approved by: mattfarina, scottrigby

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