SpriteDeviceHelper::createBuffers unused and does nothing

Change-Id: Ief6d775a53e5984e0dc6d9838280fb24bcbcb67f

canvas/source/directx/dx_spritedevicehelper.cxx

@@ -170,13 +170,6 @@ namespace dxcanvas
         return false;
     }
 
-    ::sal_Int32 SpriteDeviceHelper::createBuffers( ::sal_Int32 /*nBuffers*/ )
-    {
-        // TODO(F3): implement XBufferStrategy interface. For now, we
-        // _always_ will have exactly one backbuffer
-        return 1;
-    }
-
     void SpriteDeviceHelper::destroyBuffers()
     {
         // TODO(F3): implement XBufferStrategy interface. For now, we

canvas/source/directx/dx_spritedevicehelper.hxx

@@ -67,7 +67,6 @@ namespace dxcanvas
         bool hasFullScreenMode(  );
         bool enterFullScreenMode( bool bEnter );
 
-        ::sal_Int32 createBuffers( ::sal_Int32 nBuffers );
         void        destroyBuffers(  );
         sal_Bool  showBuffer( bool bIsVisible, sal_Bool bUpdateAll );
         sal_Bool  switchBuffer( bool bIsVisible, sal_Bool bUpdateAll );

canvas/source/vcl/spritedevicehelper.cxx

@@ -59,15 +59,6 @@ namespace vclcanvas
 #endif
     }
 
-    ::sal_Int32 SpriteDeviceHelper::createBuffers( ::sal_Int32 nBuffers )
-    {
-        (void)nBuffers;
-
-        // TODO(F3): implement XBufferStrategy interface. For now, we
-        // _always_ will have exactly one backbuffer
-        return 1;
-    }
-
     bool SpriteDeviceHelper::showBuffer( bool, bool )
     {
         OSL_FAIL("Not supposed to be called, handled by SpriteCanvas");

canvas/source/vcl/spritedevicehelper.hxx

@@ -48,7 +48,6 @@ namespace vclcanvas
         /// Dispose all internal references
         void disposing();
 
-        ::sal_Int32 createBuffers( ::sal_Int32 nBuffers );
         bool  showBuffer( bool bWindowVisible, bool bUpdateAll );
         bool  switchBuffer( bool bWindowVisible, bool bUpdateAll );
 

unusedcode.easy

@@ -109,4 +109,3 @@ vclcanvas::CanvasHelper::drawPoint(com::sun::star::rendering::XCanvas const*, co
 vclcanvas::CanvasHelper::setData(com::sun::star::uno::Sequence<signed char> const&, com::sun::star::rendering::IntegerBitmapLayout const&, com::sun::star::geometry::IntegerRectangle2D const&)
 vclcanvas::CanvasHelper::setPixel(com::sun::star::uno::Sequence<signed char> const&, com::sun::star::rendering::IntegerBitmapLayout const&, com::sun::star::geometry::IntegerPoint2D const&)
 vclcanvas::DeviceHelper::enterFullScreenMode(bool)
-vclcanvas::SpriteDeviceHelper::createBuffers(int)