Integrated: 8277649 [BACKOUT] JDK-8277507 Add jlink.debug system property while launching jpackage tests to help diagonize recent intermittent failures

[Daniel D.Daugherty]

This reverts commit 12f08ba4d47cb70a0629b17bc3639ce170309f21.

The fix for JDK-8277507 is causing 38 failures per Tier2 job set.

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Commit messages:
 - Revert "8277507: Add jlink.debug system property while launching jpackage tests to help diagonize recent intermittent failures"

Changes: https://git.openjdk.java.net/jdk/pull/6523/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=6523&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8277649
  Stats: 4 lines in 1 file changed: 0 ins; 4 del; 0 mod
  Patch: https://git.openjdk.java.net/jdk/pull/6523.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/6523/head:pull/6523

PR: https://git.openjdk.java.net/jdk/pull/6523