Remove CURSOR_VISIBILITY, it's always off

Source/core/page/EventHandler.h

Index: Source/core/page/EventHandler.h
diff --git a/Source/core/page/EventHandler.h b/Source/core/page/EventHandler.h
index dfa8c33414aaaee9830fc29e82fd2bd9375eee29..8ba21dba805f8a9c62a626d54723f58c3fada2c6 100644
--- a/Source/core/page/EventHandler.h
+++ b/Source/core/page/EventHandler.h
@@ -300,12 +300,6 @@ private:
 
     void setLastKnownMousePosition(const PlatformMouseEvent&);
 
-#if ENABLE(CURSOR_VISIBILITY)
-    void startAutoHideCursorTimer();
-    void cancelAutoHideCursorTimer();
-    void autoHideCursorTimerFired(Timer<EventHandler>*);
-#endif
-
     Frame* m_frame;
 
     bool m_mousePressed;
@@ -386,10 +380,6 @@ private:
     PlatformEvent::Type m_baseEventType;
     bool m_didStartDrag;
     bool m_didLongPressInvokeContextMenu;
-
-#if ENABLE(CURSOR_VISIBILITY)
-    Timer<EventHandler> m_autoHideCursorTimer;
-#endif
 };
 
 } // namespace WebCore