RFR: 8344293: Remove empty MetaspaceUtilsGtests.java

[Roman Kennke]

On Fri, 15 Nov 2024 10:01:02 GMT, Thomas Stuefe <stuefe at openjdk.org> wrote:

> MetaspaceUtilsGtests.java was emptied out with JDK-8305895. The reason for this was that these tests are now running under the common gtest title "metaspace" and therefore are executed as part of the normal metaspace gtests. 
> 
> The file should be removed.
> 
> Trivial change.

Marked as reviewed by rkennke (Reviewer).

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PR Review: https://git.openjdk.org/jdk/pull/22143#pullrequestreview-2443525368