Remove a bunch of OS(MACOSX) code

sky/engine/web/WebInputEventConversion.cpp

Index: sky/engine/web/WebInputEventConversion.cpp
diff --git a/sky/engine/web/WebInputEventConversion.cpp b/sky/engine/web/WebInputEventConversion.cpp
index 92dffa8017c4ce8fbf1d34ef3cf2a900f64baa59..996c375ca3895f5e1cf8b76c75fa666a06be98aa 100644
--- a/sky/engine/web/WebInputEventConversion.cpp
+++ b/sky/engine/web/WebInputEventConversion.cpp
@@ -150,16 +150,6 @@ PlatformWheelEventBuilder::PlatformWheelEventBuilder(Widget* widget, const WebMo
         m_modifiers |= PlatformEvent::MetaKey;
 
     m_hasPreciseScrollingDeltas = e.hasPreciseScrollingDeltas;
-#if OS(MACOSX)
-    m_phase = static_cast<PlatformWheelEventPhase>(e.phase);
-    m_momentumPhase = static_cast<PlatformWheelEventPhase>(e.momentumPhase);
-    m_timestamp = e.timeStampSeconds;
-    m_scrollCount = 0;
-    m_unacceleratedScrollingDeltaX = e.deltaX;
-    m_unacceleratedScrollingDeltaY = e.deltaY;
-    m_canRubberbandLeft = e.canRubberbandLeft;
-    m_canRubberbandRight = e.canRubberbandRight;
-#endif
 }
 
 // PlatformGestureEventBuilder --------------------------------------------------