RFR: 8327571: Parallel: Remove redundant operation in PSParallelCompact::clear_data_covering_space

[Albert Mingkun Yang]

Simple removing redundant code.

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Commit messages:
 - pgc-range-end

Changes: https://git.openjdk.org/jdk/pull/18152/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=18152&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8327571
  Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/jdk/pull/18152.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/18152/head:pull/18152

PR: https://git.openjdk.org/jdk/pull/18152