RFR: JDK-8292715: Cleanup Problemlist

[Prasanta Sadhukhan]

Cleanup of Problemlist

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Commit messages:
 - JDK-8292715: Cleanup Problemlist

Changes: https://git.openjdk.org/jdk/pull/9963/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=9963&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8292715
  Stats: 3 lines in 1 file changed: 0 ins; 2 del; 1 mod
  Patch: https://git.openjdk.org/jdk/pull/9963.diff
  Fetch: git fetch https://git.openjdk.org/jdk pull/9963/head:pull/9963

PR: https://git.openjdk.org/jdk/pull/9963