RFR: 8314597: Deprecate for removal protected access methods in converters

[John Hendrikx]

On Tue, 21 Nov 2023 21:11:43 GMT, Nir Lisker <nlisker at openjdk.org> wrote:

> Deprecating for removal `getDateFormat()` in `TimeStringConverter` and `DateStringConverter` after it was removed already in `DateTimeStringConverter`, and `getNumberFormat()` in `NumberStringConverter` (and subclasses).

Marked as reviewed by jhendrikx (Committer).

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PR Review: https://git.openjdk.org/jfx/pull/1294#pullrequestreview-1743554197