Added a checkstyle suppression for an unused import in DataConfiguration.
Added a checkstyle suppression for an unused import in DataConfiguration.

This is an exception class which is referenced in the Javadocs for almost all
methods.

git-svn-id: 0d31da9e303333003508381311333cf78a25d41b@1678613 13f79535-47bb-0310-9956-ffa450edef68

mohanaraosv/commons-configuration,mohanaraosv/commons-configuration,apache/commons-configuration,mohanaraosv/commons-configuration,apache/commons-configuration,apache/commons-configuration