RFR: 8309852: G1: Remove unnecessary assert_empty in G1ParScanThreadStateSet destructor

Mon Jun 12 13:38:52 UTC 2023

Trivial removing redundant code.

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Commit messages:
 - g1-preserved-marks-set-assert

Changes: https://git.openjdk.org/jdk/pull/14417/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=14417&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8309852
  Stats: 1 line in 1 file changed: 0 ins; 1 del; 0 mod
  Patch: https://git.openjdk.org/jdk/pull/14417.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/14417/head:pull/14417

PR: https://git.openjdk.org/jdk/pull/14417