[lworld] RFR: 8373875: [lworld] runtime/cds/DumpSymbolAndStringTable.java fails with --enable-preview

[Matias Saavedra Silva]

After [JDK-8370904](https://bugs.openjdk.org/browse/JDK-8370904) was integrated, several problem listed tests should now work due thanks to heap dumping being enabled.

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Commit messages:
 - Removed more tests from problem list
 - 8373875: [lworld] runtime/cds/DumpSymbolAndStringTable.java fails with --enable-preview

Changes: https://git.openjdk.org/valhalla/pull/1832/files
  Webrev: https://webrevs.openjdk.org/?repo=valhalla&pr=1832&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8373875
  Stats: 10 lines in 3 files changed: 0 ins; 10 del; 0 mod
  Patch: https://git.openjdk.org/valhalla/pull/1832.diff
  Fetch: git fetch https://git.openjdk.org/valhalla.git pull/1832/head:pull/1832

PR: https://git.openjdk.org/valhalla/pull/1832