RFR: 8330419: Unused code in ConnectionGraph::specialize_castpp

[Christian Hagedorn]

On Wed, 17 Apr 2024 00:05:23 GMT, Fei Yang <fyang at openjdk.org> wrote:

> Please review this small code cleanup change.
> 
> Noticed that `minus_one` local created in `ConnectionGraph::specialize_castpp` which is introduced by [JDK-8316991](https://bugs.openjdk.org/browse/JDK-8316991) is never used. I think it should be safe to remove this. Also renamed `boll` to `bol` to be consistent in naming with other places where we create a `BoolNode`.
> 
> Tersting: tier1 tested on linux-aarch64 (release & fastdebug)

Looks good and trivial.

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Marked as reviewed by chagedorn (Reviewer).

PR Review: https://git.openjdk.org/jdk/pull/18805#pullrequestreview-2007920559