RFR: 8331200: Serial: Remove unused methods in SerialHeap

[Albert Mingkun Yang]

On Fri, 26 Apr 2024 14:18:45 GMT, Albert Mingkun Yang <ayang at openjdk.org> wrote:

> Trivial removing dead code.

Thanks for review.

-------------

PR Comment: https://git.openjdk.org/jdk/pull/18978#issuecomment-2082170347