RFR: JDK-8314389: AttachListener::pd_set_flag obsolete

[Martin Doerr]

On Wed, 16 Aug 2023 08:09:42 GMT, Matthias Baesken <mbaesken at openjdk.org> wrote:

> AttachListener::pd_set_flag is the same across platforms (always returning JNI_ERR ). So it can be centralized or removed.

Nice cleanup!

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Marked as reviewed by mdoerr (Reviewer).

PR Review: https://git.openjdk.org/jdk/pull/15304#pullrequestreview-1582978311