RFR: 8371607: Remove GCSharedStringsDuringDumpWb.java after JDK-8362561

[Joel Sikström]

On Thu, 13 Nov 2025 16:49:32 GMT, Paul Hübner <phubner at openjdk.org> wrote:

> Hi all,
> 
> [JDK-8362561](https://bugs.openjdk.org/browse/JDK-8362561) removed `runtime/cds/appcds/javaldr/GCSharedStringsDuringDump.java` which was the only place where `GCSharedStringsDuringDumpWb.java` was used. Therefore, `GCSharedStringsDuringDumpWb.java` should be cleaned up.
> 
> Testing: tiers 1-3 Linux (x64, AArch64), macOS (x64, AArch64), Windows (x64).

Thank you for taking care of this!

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Marked as reviewed by jsikstro (Reviewer).

PR Review: https://git.openjdk.org/jdk/pull/28300#pullrequestreview-3464425928