RFR: 8344034: Remove security manager dependency in Serialization

[Roger Riggs]

After [JDK-8338411](https://bugs.openjdk.org/browse/JDK-8338411), Serialization implementation dependencies on SecurityManager, doPrivildged, and AccessController are removed.
Some refactoring to cleanup the remaining code is expected.

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Depends on: https://git.openjdk.org/jdk/pull/21498

Commit messages:
 - JDK-8344034: Remove security manager dependency in Serialization

Changes: https://git.openjdk.org/jdk/pull/22041/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=22041&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8344034
  Stats: 382 lines in 5 files changed: 2 ins; 287 del; 93 mod
  Patch: https://git.openjdk.org/jdk/pull/22041.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/22041/head:pull/22041

PR: https://git.openjdk.org/jdk/pull/22041