Summary

Remove references to obsolete Xdebug flag from JDWP help.

Problem

The help information returned by "java -Xrunjdwp:help" command shows the usage of obsolete Xdebug option that has been a no-op flag since JDK 6.

Solution

Remove references to Xdebug flag from JDWP help.

Specification

The following fragment retuned by "java -Xrunjdwp:help"

- The older -Xrunjdwp interface can still be used, but will be removed in
  a future release, for example:
      java -Xdebug -Xrunjdwp:[help]|[<option>=<value>, ...]

will be replaced with:

- The older -Xrunjdwp interface can still be used, but will be removed in
  a future release, for example:
      java -Xrunjdwp:[help]|[<option>=<value>, ...]