<i18n dev> RFR: 8336300: DateFormatSymbols#getInstanceRef returns non-cached instance [v2]

[Naoto Sato]

> Removing a redundant private method, which has the same implementation with the public sibling and obsolete method description.

Naoto Sato has updated the pull request incrementally with one additional commit since the last revision:

  Removed unnecessary `this`

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Changes:
  - all: https://git.openjdk.org/jdk/pull/20199/files
  - new: https://git.openjdk.org/jdk/pull/20199/files/13dc1e74..4795076c

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=20199&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=20199&range=00-01

  Stats: 2 lines in 1 file changed: 0 ins; 0 del; 2 mod
  Patch: https://git.openjdk.org/jdk/pull/20199.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/20199/head:pull/20199

PR: https://git.openjdk.org/jdk/pull/20199