[jdk25u] RFR: 8370393: Cleanup handling of ancient Windows versions from GetJavaProperties java_props_md

[Matthias Baesken]

8370393: Cleanup handling of ancient Windows versions from GetJavaProperties java_props_md

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Commit messages:
 - Backport 16dafc00eca8acb0fdabf2f373bb5f84bd293086

Changes: https://git.openjdk.org/jdk25u/pull/387/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk25u&pr=387&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8370393
  Stats: 54 lines in 1 file changed: 0 ins; 53 del; 1 mod
  Patch: https://git.openjdk.org/jdk25u/pull/387.diff
  Fetch: git fetch https://git.openjdk.org/jdk25u.git pull/387/head:pull/387

PR: https://git.openjdk.org/jdk25u/pull/387