RFR: 7904025: jcstress: Remove dangling doc comments which fail build on JDK 23+

[Aleksey Shipilev]

On Fri, 6 Jun 2025 14:15:53 GMT, Pavel Rappo <prappo at openjdk.org> wrote:

> See for details: https://mail.openjdk.org/pipermail/jcstress-dev/2025-June/001293.html

Looks fine, thanks.

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Marked as reviewed by shade (Committer).

PR Review: https://git.openjdk.org/jcstress/pull/162#pullrequestreview-2905157086