Remove empty folders left over by git-svn.

git-svn-id: https://svn.apache.org/repos/asf/webservices/axiom/trunk@1608000 13f79535-47bb-0310-9956-ffa450edef68
Removed some test cases made redundant by the addition of the W3C DOM test suite.

git-svn-id: https://svn.apache.org/repos/asf/webservices/axiom/trunk@1608002 13f79535-47bb-0310-9956-ffa450edef68