RFR: JMC-7941 More Eclipse IDE fixes

Fri Oct 21 05:54:45 UTC 2022

This repairs a classpath warning in flightrecorder.graphview due to missing folder src/test/java.

Furthermore, I removed .settings files which are excluded via .gitignore anyway and are generated by local IDE setup.

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Commit messages:
 - Update Java SE version in manifest, too
 - JMC-7941 More Eclipse IDE fixes

Changes: https://git.openjdk.org/jmc/pull/446/files
 Webrev: https://webrevs.openjdk.org/?repo=jmc&pr=446&range=00
  Issue: https://bugs.openjdk.org/browse/JMC-7941
  Stats: 31 lines in 5 files changed: 0 ins; 28 del; 3 mod
  Patch: https://git.openjdk.org/jmc/pull/446.diff
  Fetch: git fetch https://git.openjdk.org/jmc pull/446/head:pull/446

PR: https://git.openjdk.org/jmc/pull/446