Removed unused ScrollAnimatorMac methods.

Source/platform/mac/ScrollAnimatorMac.mm

Index: Source/platform/mac/ScrollAnimatorMac.mm
diff --git a/Source/platform/mac/ScrollAnimatorMac.mm b/Source/platform/mac/ScrollAnimatorMac.mm
index 6ab30748bb030c8766b1660684868531208ea12e..8e4577287c9281addc5e034d9e6a201faaf0d465 100644
--- a/Source/platform/mac/ScrollAnimatorMac.mm
+++ b/Source/platform/mac/ScrollAnimatorMac.mm
@@ -129,13 +129,6 @@ static NSSize abs(NSSize size)
     return NSMakeRect(currentPosition.x(), currentPosition.y(), 0, 0);
 }
 
-- (void)_immediateScrollToPoint:(NSPoint)newPosition
-{
-    if (!_animator)
-        return;
-    _animator->immediateScrollToPointForScrollAnimation(newPosition);
-}
-
 - (NSPoint)_pixelAlignProposedScrollPosition:(NSPoint)newOrigin
 {
     return newOrigin;
@@ -769,12 +762,6 @@ void ScrollAnimatorMac::immediateScrollTo(const FloatPoint& newPosition)
     notifyPositionChanged();
 }
 
-void ScrollAnimatorMac::immediateScrollToPointForScrollAnimation(const FloatPoint& newPosition)
-{
-    ASSERT(m_scrollAnimationHelper);
-    immediateScrollTo(newPosition);
-}
-
 void ScrollAnimatorMac::contentAreaWillPaint() const
 {
     if (!scrollableArea()->scrollbarsCanBeActive())