hg: jdk/sandbox: JDK-8235198: remove reference to external jtreg.jar from test script

[andy.herrick at oracle.com]

Changeset: 3fa70ea2aef4
Author:    herrick
Date:      2019-12-03 13:37 -0500
URL:       https://hg.openjdk.java.net/jdk/sandbox/rev/3fa70ea2aef4

JDK-8235198: remove reference to external jtreg.jar from test script
Reviewed-by: kcr, asemenyuk

! test/jdk/tools/jpackage/run_tests.sh