RFR: 8344077: Remove security manager dependency in java.io

[Brian Burkhalter]

Expunge the use of the `SecurityManager`, `AccessController`, and the like from the `java.io` package.

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Commit messages:
 - 8344077: Remove security manager dependency in java.io

Changes: https://git.openjdk.org/jdk/pull/22219/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=22219&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8344077
  Stats: 261 lines in 9 files changed: 2 ins; 225 del; 34 mod
  Patch: https://git.openjdk.org/jdk/pull/22219.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/22219/head:pull/22219

PR: https://git.openjdk.org/jdk/pull/22219