RFR: 8365040: G1: Remove sorting at end of collection set selection

[Thomas Schatzl]

Hi all,

  please review this change to remove some unnecessary sorting of the collection set introduced in https://bugs.openjdk.org/browse/JDK-8165313, and made unnecessary in https://bugs.openjdk.org/browse/JDK-8165443 (all JDK 9 :)).

Testing: test case in CRs, see CR for test results, gha

Thanks,
  Thomas

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Depends on: https://git.openjdk.org/jdk/pull/26670

Commit messages:
 - 8365040

Changes: https://git.openjdk.org/jdk/pull/26676/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=26676&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8365040
  Stats: 6 lines in 1 file changed: 0 ins; 6 del; 0 mod
  Patch: https://git.openjdk.org/jdk/pull/26676.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/26676/head:pull/26676

PR: https://git.openjdk.org/jdk/pull/26676