refs #648, refs #640 review of MS

https://dev.vatsim-germany.org/issues/648#note-5

src/blackmisc/orderable.h

@@ -17,7 +17,7 @@
 
 namespace BlackMisc
 {
-    //! Entity with timestamp
+    //! Entity with order attribute (can be manually ordered in views)
     class BLACKMISC_EXPORT IOrderable
     {
     public:
@@ -63,6 +63,4 @@ namespace BlackMisc
     };
 } // namespace
 
-Q_DECLARE_INTERFACE(BlackMisc::IOrderable, "org.swift-project.blackmisc.iorderable")
-
 #endif // guard