RFR: 8322298: Remove unused AdaptiveSizePolicyCollectionCostMargin

Mon Dec 18 14:38:55 UTC 2023

Trivial removing dead code.

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Commit messages:
 - remove-flag

Changes: https://git.openjdk.org/jdk/pull/17145/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=17145&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8322298
  Stats: 5 lines in 1 file changed: 0 ins; 5 del; 0 mod
  Patch: https://git.openjdk.org/jdk/pull/17145.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/17145/head:pull/17145

PR: https://git.openjdk.org/jdk/pull/17145