RFR: Remove passing tests from ProblemList.txt [v2]

[Aleksey Shipilev]

On Wed, 3 May 2023 23:51:55 GMT, William Kemper <wkemper at openjdk.org> wrote:

>> Recent test runs suggest that all but three tests are now passing. The remaining failures are believed to be fixed by https://github.com/openjdk/shenandoah/pull/248.
>
> William Kemper has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Disable tests which failed in GHA

Marked as reviewed by shade (Committer).

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PR Review: https://git.openjdk.org/shenandoah/pull/273#pullrequestreview-1412569051