RFR: 8284921: tier1 test failures after JDK-8284909

[Doug Simon]

Fixes regressions caused by JDK-8284909.

-------------

Commit messages:
 - remove references to deleted HotSpotMetaData class

Changes: https://git.openjdk.java.net/jdk/pull/8269/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=8269&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8284921
  Stats: 11 lines in 3 files changed: 0 ins; 11 del; 0 mod
  Patch: https://git.openjdk.java.net/jdk/pull/8269.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/8269/head:pull/8269

PR: https://git.openjdk.java.net/jdk/pull/8269