Integrated: 8334681: GenShen: Do not use gtest skip test feature

[William Kemper]

Clean backport

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Commit messages:
 - Backport a7c5d8a96e62b56218384ebc6a531f3bdc12a56f

Changes: https://git.openjdk.org/shenandoah-jdk21u/pull/60/files
  Webrev: https://webrevs.openjdk.org/?repo=shenandoah-jdk21u&pr=60&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8334681
  Stats: 23 lines in 1 file changed: 18 ins; 3 del; 2 mod
  Patch: https://git.openjdk.org/shenandoah-jdk21u/pull/60.diff
  Fetch: git fetch https://git.openjdk.org/shenandoah-jdk21u.git pull/60/head:pull/60

PR: https://git.openjdk.org/shenandoah-jdk21u/pull/60