split tx_audit_log into tx_context and tx_journal

src/main/java/net/hostsharing/hsadminng/rbac/rbacuser/RbacUserController.java

@@ -23,9 +23,6 @@ public class RbacUserController implements RbacusersApi {
     @Autowired
     private Context context;
 
-    @Autowired
-    private EntityManager em;
-
     @Autowired
     private RbacUserRepository rbacUserRepository;