RFR: 8333117: Remove support of remote and manual debuggee launchers

[Leonid Mesnik]

The nsk jdi,jdb,jdwp test suites support remote and manual launchers that are not used. 
These launchers might be configured by test options, however no tests use these options. 
The remote launchers allow to run debugee on another host which is not supported by jtreg and not seems useful for testing. The manual debuggee launcher might be used to connect launch debuggee manually and also not used.

These modes have never been used last 15 years as I know.

So just removed a bunch of useless code.

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Commit messages:
 - 8333117: Remove support of remote and manual debuggee launchers

Changes: https://git.openjdk.org/jdk/pull/19729/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=19729&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8333117
  Stats: 1565 lines in 10 files changed: 41 ins; 1460 del; 64 mod
  Patch: https://git.openjdk.org/jdk/pull/19729.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/19729/head:pull/19729

PR: https://git.openjdk.org/jdk/pull/19729