CR_067: Remove wsdl model in a future version

[haeckerbaer]

In change request CR_067 (https://3.basecamp.com/3256016/buckets/9672657/uploads/6472792963) we discussed the removal of the soap/wsdl structures a few years ago. To preserve backwards compatibility we decided to keep it. We should analyze again whether these structures are needed in version 2.2 (or 2.X).

[TuThoThai]

@haeckerbaer, could you confirm that this issue can be closed?