RFR: 8331537: Test code should not use the "Classpath" exception clause

[Christian Stein]

Please review this change removing the "Classpath" exception clause from test files.

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Commit messages:
 - 8331537: Test code should not use the "Classpath" exception clause

Changes: https://git.openjdk.org/jdk/pull/19057/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=19057&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8331537
  Stats: 18 lines in 6 files changed: 0 ins; 12 del; 6 mod
  Patch: https://git.openjdk.org/jdk/pull/19057.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/19057/head:pull/19057

PR: https://git.openjdk.org/jdk/pull/19057