RFR: 8305083: Remove finalize() from test/hotspot/jtreg/vmTestbase/nsk/share/ and /jpda that are used in serviceability/dcmd/framework tests

[Afshin Zafari]

The `finalize()` method is removed from base classes/interfaces and are replaced by a Cleaner callback..

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Commit messages:
 - 8305083: Remove finalize() from test/hotspot/jtreg/vmTestbase/nsk/share/ and /jpda that are used in serviceability/dcmd/framework tests

Changes: https://git.openjdk.org/jdk/pull/13420/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=13420&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8305083
  Stats: 75 lines in 6 files changed: 45 ins; 9 del; 21 mod
  Patch: https://git.openjdk.org/jdk/pull/13420.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/13420/head:pull/13420

PR: https://git.openjdk.org/jdk/pull/13420