RFR: 8370878: C1: Clean up unnecessary ConversionStub constructor [v2]

[Christian Hagedorn]

On Sat, 1 Nov 2025 14:14:37 GMT, Zihao Lin <duke at openjdk.org> wrote:

>> C1: Clean up unnecessary ConversionStub constructor
>> Remove class which should not reach.
>
> Zihao Lin has updated the pull request incrementally with one additional commit since the last revision:
> 
>   fix arm

Looks good, thanks for cleaning it up!

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Marked as reviewed by chagedorn (Reviewer).

PR Review: https://git.openjdk.org/jdk/pull/28096#pullrequestreview-3409906428