RFR: 8261666: [mlvm] Remove WhiteBoxHelper

Wed Feb 17 15:46:58 UTC 2021

The mlvm test suite used this class for situations when WhiteBox was not available during the test's build time - therefore, the test tried to find the WhiteBox on runtime.

These days, the WhiteBox is always available so this is not the case. The said helper is to be removed and its only user adjusted.

Testing: test/hotspot/jtreg/vmTestBase/vm/mlvm on linux/mac/windows x64.

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Commit messages:
 - 8261666: [mlvm] Remove WhiteBoxHelper

Changes: https://git.openjdk.java.net/jdk/pull/2609/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=2609&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8261666
  Stats: 85 lines in 2 files changed: 3 ins; 80 del; 2 mod
  Patch: https://git.openjdk.java.net/jdk/pull/2609.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/2609/head:pull/2609

PR: https://git.openjdk.java.net/jdk/pull/2609