RFR: 8344331: SM cleanup in java.scripting

[Justin Lu]

Please review this PR which removes the lone `AccessController.doPrivileged` call from the _java.scripting_ module after JEP486 integration.

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Commit messages:
 - init

Changes: https://git.openjdk.org/jdk/pull/22170/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=22170&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8344331
  Stats: 5 lines in 1 file changed: 0 ins; 3 del; 2 mod
  Patch: https://git.openjdk.org/jdk/pull/22170.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/22170/head:pull/22170

PR: https://git.openjdk.org/jdk/pull/22170