Remove FixFloorTabController initStage1 function

The function was a noop.

src/tabcontrollers/FixFloorTabController.cpp

@@ -5,8 +5,6 @@
 // application namespace
 namespace advsettings
 {
-void FixFloorTabController::initStage1() {}
-
 void FixFloorTabController::initStage2( OverlayController* var_parent )
 {
     this->parent = var_parent;

src/tabcontrollers/FixFloorTabController.h

@@ -53,7 +53,6 @@ private:
     int getControllerType( vr::TrackedDeviceIndex_t controllerRole );
 
 public:
-    void initStage1();
     void initStage2( OverlayController* parent );
 
     void eventLoopTick( vr::TrackedDevicePose_t* devicePoses );