RFR: 8282201: Consider removal of expiry check in VerifyCACerts.java test

Tue Mar 7 21:33:35 UTC 2023

This fix removes the check for 90 days expiry. But the test will continue to fail if the expired certificate is included in `cacerts` but no exception is granted.

Fix also includes minor code cleanup.

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Commit messages:
 - Consider removal of expiry check in VerifyCACerts.java test

Changes: https://git.openjdk.org/jdk/pull/12910/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=12910&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8282201
  Stats: 52 lines in 1 file changed: 16 ins; 24 del; 12 mod
  Patch: https://git.openjdk.org/jdk/pull/12910.diff
  Fetch: git fetch https://git.openjdk.org/jdk pull/12910/head:pull/12910

PR: https://git.openjdk.org/jdk/pull/12910