[Python] Deprecate Plasma Python bindings

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Reporter: Antoine Pitrou / @pitrou
Assignee: Alenka Frim / @AlenkaF

Related issues:

• [C/GLib] Deprecate Plasma C/GLib bindings (is a clone of)
• [Ruby] Deprecate Plasma Ruby bindings (is cloned by)

PRs and other links:

• GitHub Pull Request #14343

_{Note: This issue was originally created as ARROW-17863. Please see the migration documentation for further details.}

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Antoine Pitrou / @pitrou:
@jorisvandenbossche

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Antoine Pitrou / @pitrou:
ALso cc @milesgranger

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Joris Van den Bossche / @jorisvandenbossche:
Issue resolved by pull request 14343
#14343