remove empty methods

They are empty since 3a20556d.

Change-Id: Ibd6c1722d3088d92677338b5b8011cddd6dd98cf

sc/inc/refreshtimer.hxx

@@ -66,10 +66,6 @@ class ScRefreshTimer : public AutoTimer
 private:
     ScRefreshTimerControl * const * ppControl;
 
-    void AppendToControl() {}
-
-    void RemoveFromControl() {}
-
     void Start()
     {
         if ( GetTimeout() )
@@ -104,12 +100,7 @@ public:
 
     void StartRefreshTimer() { Start(); }
 
-    void SetRefreshControl( ScRefreshTimerControl * const * pp )
-    {
-        RemoveFromControl();
-        ppControl = pp;
-        AppendToControl();
-    }
+    void SetRefreshControl( ScRefreshTimerControl * const * pp ) { ppControl = pp; }
 
     void SetRefreshHandler( const Link& rLink ) { SetTimeoutHdl( rLink ); }
 

sc/source/core/tool/refreshtimer.cxx

@@ -37,7 +37,6 @@ ScRefreshTimer::~ScRefreshTimer()
 {
     if ( IsActive() )
         Stop();
-    RemoveFromControl();
 }