Get rid of the one remaining extra call to LayerPainter::beginTransparencyLayers.

Source/core/paint/LayerPainter.h

Index: Source/core/paint/LayerPainter.h
diff --git a/Source/core/paint/LayerPainter.h b/Source/core/paint/LayerPainter.h
index 484718abfd507f66bcd5a669bff4fbab06ec31d8..5e67674b126b17b04f2bfd86530d18d784036343 100644
--- a/Source/core/paint/LayerPainter.h
+++ b/Source/core/paint/LayerPainter.h
@@ -61,7 +61,6 @@ private:
     // Returns whether this layer should be painted during sofware painting (i.e., not via calls from CompositedLayerMapping to draw into composited
     // layers).
     bool shouldPaintLayerInSoftwareMode(const LayerPaintingInfo&, PaintLayerFlags paintFlags);
-    bool shouldCreateTransparencyLayerForBlendMode();
 
     RenderLayer& m_renderLayer;
 };