MockAsWar: remove the WsdlProject parameter from the constructor

This parameter had been introduced for the initial usage statistics implementation, but is not needed anymore.
Adding this parameter breaks the api compatibility with the previous version, so I propose to remove it.

I have already notified SmartBear developers about this, see
* https://github.com/SmartBear/soapui/commit/f36ce5b35df9cdc981150da3557c7d6c9689a3d2#commitcomment-6422713
* https://github.com/SmartBear/soapui/commit/41b8d65d9b74e3a8e7268c7615f1a1445f38c1ec#commitcomment-6427225

//cc @olensmar, @sergeylukashenko, @shadidchowdhury