Maintain strict separation between OM and SOAP test cases: removed redundant assertions in org.apache.axiom.ts.om.factory.TestFactoryIsSingleton that are also executed in org.apache.axiom.ts.soap.factory.TestFactoryIsSingleton.

git-svn-id: https://svn.apache.org/repos/asf/webservices/axiom/trunk@1548741 13f79535-47bb-0310-9956-ffa450edef68
Moved some test cases to the right location (they use SOAP, but were classified as OM test cases).

git-svn-id: https://svn.apache.org/repos/asf/webservices/axiom/trunk@1548742 13f79535-47bb-0310-9956-ffa450edef68