RFR: 8302868: Serial: Remove CardTableRS::initialize

Mon Feb 20 12:35:08 UTC 2023

Simple removing redundant code.

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Commit messages:
 - trivial

Changes: https://git.openjdk.org/jdk/pull/12659/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=12659&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8302868
  Stats: 5 lines in 2 files changed: 0 ins; 5 del; 0 mod
  Patch: https://git.openjdk.org/jdk/pull/12659.diff
  Fetch: git fetch https://git.openjdk.org/jdk pull/12659/head:pull/12659

PR: https://git.openjdk.org/jdk/pull/12659