Remove mouse events from Sky

sky/engine/core/frame/FrameView.h

Index: sky/engine/core/frame/FrameView.h
diff --git a/sky/engine/core/frame/FrameView.h b/sky/engine/core/frame/FrameView.h
index adf6448f5f44289b3f0830090d7f2b5d11e2bfd5..19b0f33786fd0ed40403bf49a3459aa3a5ca8a1a 100644
--- a/sky/engine/core/frame/FrameView.h
+++ b/sky/engine/core/frame/FrameView.h
@@ -160,11 +160,6 @@ public:
     void removeScrollableArea(ScrollableArea*);
     const ScrollableAreaSet* scrollableAreas() const { return m_scrollableAreas.get(); }
 
-    // This function exists for ports that need to handle wheel events manually.
-    // On Mac WebKit1 the underlying NSScrollView just does the scrolling, but on most other platforms
-    // we need this function in order to do the scroll ourselves.
-    bool wheelEvent(const PlatformWheelEvent&);
-
     void setHasSoftwareFilters(bool hasSoftwareFilters) { m_hasSoftwareFilters = hasSoftwareFilters; }
     bool hasSoftwareFilters() const { return m_hasSoftwareFilters; }