RFR: Remove dead code [v2]

[Maurizio Cimadamore]

On Wed, 13 Dec 2023 01:52:14 GMT, Jorn Vernee <jvernee at openjdk.org> wrote:

>> Remove the last little bits of dead code. (found through code coverage report)
>
> Jorn Vernee has updated the pull request incrementally with two additional commits since the last revision:
> 
>  - last few bits
>  - remove more dead code

Looks great, thanks!

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Marked as reviewed by mcimadamore (Committer).

PR Review: https://git.openjdk.org/jextract/pull/158#pullrequestreview-1779318851