RFR: 8264569: Remove obsolete error messages from CDSTestUtils.java

[Yumin Qi]

Hi, Please review this simple change to remove check messages which no longer exist in vm output.

Tests: teri1,teir2,tier3,tier4

Thanks
Yumin

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Commit messages:
 - 8264569: Remove obsolete error messages from CDSTestUtils.java

Changes: https://git.openjdk.java.net/jdk/pull/3573/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=3573&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8264569
  Stats: 13 lines in 1 file changed: 1 ins; 9 del; 3 mod
  Patch: https://git.openjdk.java.net/jdk/pull/3573.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/3573/head:pull/3573

PR: https://git.openjdk.java.net/jdk/pull/3573