RFR: 8368345: Remove leftover includes of strongRootsScope.hpp

[Albert Mingkun Yang]

On Mon, 22 Sep 2025 23:54:09 GMT, Francesco Andreuzzi <fandreuzzi at openjdk.org> wrote:

> #27336 and #27385 replaced some `StrongRootsScope` usages with `ThreadsClaimTokenScope`. Some includes to `strongRootsScope.hpp` can now be removed.
> 
> This looks trivial to me.
> 
> Passes tier1.

Thanks for the cleanup.

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Marked as reviewed by ayang (Reviewer).

PR Review: https://git.openjdk.org/jdk/pull/27442#pullrequestreview-3256778301