Remove StatisticsTabController initStage1 function

Function was a noop.

src/tabcontrollers/StatisticsTabController.cpp

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

src/tabcontrollers/StatisticsTabController.h

@@ -51,7 +51,6 @@ private:
     unsigned m_totalRatioReprojectedOffset = 0;
 
 public:
-    void initStage1();
     void initStage2( OverlayController* parent );
 
     void eventLoopTick( vr::TrackedDevicePose_t* devicePoses,