RFR: 8344555: SM cleanup - drop reflection filter of System.security field

[Roger Riggs]

The `java.lang.Sytem.security` field no longer exists; remove it from the filterMap.

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Commit messages:
 - 8344555: SM cleanup - drop reflection filter of System.security field

Changes: https://git.openjdk.org/jdk/pull/22400/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=22400&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8344555
  Stats: 2 lines in 1 file changed: 0 ins; 1 del; 1 mod
  Patch: https://git.openjdk.org/jdk/pull/22400.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/22400/head:pull/22400

PR: https://git.openjdk.org/jdk/pull/22400