Purge usages of -d32/-d64 options in all tests

The launcher options -d32/-d64 were obsolete in jdk8, and were deprecated in the JDK9, see https://bugs.openjdk.java.net/browse/JDK-8168010
these flags must be removed as soon as possible, in all the hotspot
tests and harnesses, as the launcher support will be removed to cause a spurious test failure(s).