Remove htmlunit-core-js dependency

Soapui code does not use this dependency; it is only needed by hmlunit
which declares it as dependency. So htmlunit-core-js is now retrieved
transitively
Remove org.apache.santuario:xmlsec dependency

Soapui code does not used it and it is retrieved transitively by wss4j
Remove joda-time dependency

Soapui does not use it and it is retrieved transitively as a dependency of
wss4j
Remove cssparser and sac dependencies

They are only needed by htmlunit and htmlunit already declares them as
dependencies
Remove nekohtml dependency

Only needed as transitive dependency of htmlunit
Remove ezmorph dependency

Only needed as transitive dependency of json-lib