Removed test based on the assumption that iterating over a
"ConcurrentHashMap" would always provide its elements in a
random order. This seemed to be the case up to Java 7 but
not always in Java 8.


git-svn-id: https://svn.apache.org/repos/asf/commons/proper/math/trunk@1591770 13f79535-47bb-0310-9956-ffa450edef68