RFR: 8302868: Serial: Remove CardTableRS::initialize

[Albert Mingkun Yang]

On Mon, 20 Feb 2023 12:27:56 GMT, Albert Mingkun Yang <ayang at openjdk.org> wrote:

> Simple removing redundant code.

Thanks for the review.

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