RFR: 8343115: SkipIfEqual class is not used after JDK-8335946

[Fei Yang]

On Sun, 27 Oct 2024 03:45:04 GMT, Fei Yang <fyang at openjdk.org> wrote:

> Hi, please review this cleanup change.
> This simply removed SkipIfEqual class for all cpu platforms as it's not used anymore after JDK-8335946.
> 
> Testing:
> - [x] GHA

Thanks all for the review!

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PR Comment: https://git.openjdk.org/jdk/pull/21731#issuecomment-2442909895