RFR: 8323499: Remove unused methods in space.hpp

[Albert Mingkun Yang]

On Wed, 10 Jan 2024 09:31:14 GMT, Albert Mingkun Yang <ayang at openjdk.org> wrote:

> Trivial removing dead code.

Thanks for the review.

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PR Comment: https://git.openjdk.org/jdk/pull/17342#issuecomment-1884621712