Removed unused constant

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/pool/trunk@1509382 13f79535-47bb-0310-9956-ffa450edef68
Fix typo

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/pool/trunk@1509383 13f79535-47bb-0310-9956-ffa450edef68