RFR: 7903940: Remove problematic `LIBRARY.properties` implementation

[Christian Stein]

Please review this change to remove the `LIBRARY.properties` implementation from `jtreg`

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Commit messages:
 - 7903940: Remove problematic `LIBRARY.properties` implementation

Changes: https://git.openjdk.org/jtreg/pull/244/files
  Webrev: https://webrevs.openjdk.org/?repo=jtreg&pr=244&range=00
  Issue: https://bugs.openjdk.org/browse/CODETOOLS-7903940
  Stats: 407 lines in 19 files changed: 3 ins; 398 del; 6 mod
  Patch: https://git.openjdk.org/jtreg/pull/244.diff
  Fetch: git fetch https://git.openjdk.org/jtreg.git pull/244/head:pull/244

PR: https://git.openjdk.org/jtreg/pull/244