RFR: 8363357: Remove unused flag VerifyAdapterCalls

[Marc Chevalier]

On Wed, 23 Jul 2025 07:46:58 GMT, Marc Chevalier <mchevalier at openjdk.org> wrote:

> It seems that the flag VerifyAdapterCalls is unused since [JDK-8350209](https://bugs.openjdk.org/browse/JDK-8350209), so pretty recently.
> 
> Let's remove it, very direct, no trick.

Thanks @chhagedorn & @TobiHartmann!

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PR Comment: https://git.openjdk.org/jdk/pull/26440#issuecomment-3112717716