Revert "WOBS-3246: Adds new service and exception for new subscription management service"

This reverts commit b4d06e787ce2a4d93d891d515a4043bb9e42e8e1.
Revert "WOBS-3246: Changes all references to dmpro service to new verlagsmanager service"

This reverts commit 2ff80f0a432fe758863c9c601e76094c0ebe5c08.