Ref T261, interpolator mode is now part of setup

* added attribute in setup
* adjusted UI
* adjusted interpolator / simulator functions

src/blackcore/simulator.h

@@ -187,10 +187,6 @@ namespace BlackCore
         //! \copydoc BlackMisc::IProvider::asQObject
         virtual QObject *asQObject() override { return this; }
 
-        //! Set interpolation mode, empty callsign applies to all know callsigns
-        //! \return Returns true if the mode changed, otherwise false. Note that some implementations always return true.
-        virtual bool setInterpolatorMode(BlackMisc::Simulation::CInterpolatorMulti::Mode mode, const BlackMisc::Aviation::CCallsign &callsign) = 0;
-
         //! \addtogroup swiftdotcommands
         //! @{
         //! <pre>