RFR: 8354944: Remove unnecessary PartiallyOrderedSet.nodes

[Andrey Turbanov]

On Wed, 16 Apr 2025 20:50:24 GMT, Andrey Turbanov <aturbanov at openjdk.org> wrote:

> We can use `javax.imageio.spi.PartiallyOrderedSet#poNodes` directly

@aivanov-jdk @TejeshR13 can you please review and put the second approve?

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PR Comment: https://git.openjdk.org/jdk/pull/24699#issuecomment-2911589976