RFR: 8313207: Remove MetaspaceShared::_has_error_classes

Thu Jul 27 21:22:12 UTC 2023

The field _has_error_classes has its value set and change but it is no longer checked after [JDK-8240481](https://bugs.openjdk.org/browse/JDK-8240481). This patch removes all instances MetaspaceShared::_has_error_classes. Verified with tier 1-4 tests.

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

Commit messages:
 - 8313207: Remove MetaspaceShared::_has_error_classes

Changes: https://git.openjdk.org/jdk/pull/15060/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=15060&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8313207
  Stats: 4 lines in 2 files changed: 0 ins; 4 del; 0 mod
  Patch: https://git.openjdk.org/jdk/pull/15060.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/15060/head:pull/15060

PR: https://git.openjdk.org/jdk/pull/15060