RFR: 8298443: Remove expired flags in JDK 22

[David Holmes]

Simple change to remove the two expired flags in JDK 22 and update the relevant section of the java manpage.

Thanks.

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Commit messages:
 - 8298443: Remove expired flags in JDK 22

Changes: https://git.openjdk.org/jdk/pull/14549/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=14549&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8298443
  Stats: 21 lines in 2 files changed: 3 ins; 16 del; 2 mod
  Patch: https://git.openjdk.org/jdk/pull/14549.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/14549/head:pull/14549

PR: https://git.openjdk.org/jdk/pull/14549