RFR: 8344768: Consider removing "sun.security.krb5.autodeducerealm" system property

[Weijun Wang]

The system property was used to signal a case where a certain permission is required. It's not useless.

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Commit messages:
 - the fix

Changes: https://git.openjdk.org/jdk/pull/22492/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=22492&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8344768
  Stats: 63 lines in 3 files changed: 0 ins; 24 del; 39 mod
  Patch: https://git.openjdk.org/jdk/pull/22492.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/22492/head:pull/22492

PR: https://git.openjdk.org/jdk/pull/22492