RFR: 8265372: Simplify PKCS9Attribute [v2]

[Ben Perez]

On Tue, 2 Jan 2024 21:54:19 GMT, Weijun Wang <weijun at openjdk.org> wrote:

>> Do you think we can remove `PKCS9Attributes.getAttributes()` entirely or should we just modify it to not use `PKCS9_OIDS` anymore?
>
> I think we can remove both. There is no need to keep a useless method as long as it's not an exported API.

The test `sun/security/x509/AlgorithmId/NonStandardNames.java` uses the `getAttributes()` though it seems it does so just to verify the method works. I'll go ahead and remove that method call from the test unless you think that would be a bad idea

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PR Review Comment: https://git.openjdk.org/jdk/pull/17132#discussion_r1449493698