RFR: 8361693: Remove Klass::clean_subklass_tree()

[Zhengyu Gu]

On Wed, 9 Jul 2025 14:08:20 GMT, Thomas Schatzl <tschatzl at openjdk.org> wrote:

> Hi all,
> 
>   please review this inlining of Klass::clean_subklass_tree because it's only used in one place and replaces only one call. There does not seem to be any advantage having the extra method.
> 
> Testing: local compilation, gha
> 
> Thanks,
>   Thomas

LGTM

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Marked as reviewed by zgu (Reviewer).

PR Review: https://git.openjdk.org/jdk/pull/26220#pullrequestreview-3001985884