RFR: 8344330: Remove AccessController.doPrivileged() from jdk.charsets module [v2]

[Naoto Sato]

> Removing a `AccessController.doPrivileged()` call from jdk.charsets module after JEP486 integration.

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

  fixed import

-------------

Changes:
  - all: https://git.openjdk.org/jdk/pull/22162/files
  - new: https://git.openjdk.org/jdk/pull/22162/files/ebd0523f..03d25e8f

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=22162&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=22162&range=00-01

  Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/jdk/pull/22162.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/22162/head:pull/22162

PR: https://git.openjdk.org/jdk/pull/22162