RFR: 8333117: Remove support of remote and manual debuggee launchers [v2]

[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.
> 
> Also, I moved implementation of the single Debugee realization into Debugee itself for jdi/jdwp/jdb.

Leonid Mesnik has updated the pull request incrementally with one additional commit since the last revision:

  fixed error message

-------------

Changes:
  - all: https://git.openjdk.org/jdk/pull/19729/files
  - new: https://git.openjdk.org/jdk/pull/19729/files/4c0142ed..f0e3c6ab

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=19729&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=19729&range=00-01

  Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 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