hg: shenandoah/jdk9/hotspot: Disable aggressive+verification test configs (leftovers)

[ashipile at redhat.com]

Changeset: 5bd4a9ed9c7e
Author:    shade
Date:      2017-06-05 18:15 +0200
URL:       http://hg.openjdk.java.net/shenandoah/jdk9/hotspot/rev/5bd4a9ed9c7e

Disable aggressive+verification test configs (leftovers)

! test/gc/shenandoah/acceptance/StringInternCleanup.java
! test/gc/stress/gcbasher/TestGCBasherWithShenandoah.java