Motion - remove dummy Idler functions

src/modules/motion.cpp

@@ -14,10 +14,6 @@ void Motion::SetMode(MotorMode mode) {}
 
 void Motion::Step() {}
 
-bool Motion::IdlerDisengaged() const { return true; }
-
-bool Motion::IdlerEngaged() const { return true; }
-
 void ISR() {}
 
 //@@TODO check the directions

src/modules/motion.h

@@ -89,10 +89,6 @@ public:
     void AbortPlannedMoves() {}
 
     /// probably higher-level operations knowing the semantic meaning of axes
-    void Idler(IdlerMode im) {}
-
-    bool IdlerDisengaged() const;
-    bool IdlerEngaged() const;
 
 private:
 };