RFR: 8366871: (javac) legacy.properties seems to be an obsolete file

[Vicente Romero]

Simple PR removing an obsolete properties file,

TIA

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Commit messages:
 - Merge branch 'master' into JDK-8366871
 - 8366871: (javac) legacy.properties seems to be an obsolete file

Changes: https://git.openjdk.org/jdk/pull/28001/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=28001&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8366871
  Stats: 570 lines in 1 file changed: 0 ins; 570 del; 0 mod
  Patch: https://git.openjdk.org/jdk/pull/28001.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/28001/head:pull/28001

PR: https://git.openjdk.org/jdk/pull/28001