removing unneeded RCTScrollView and RCTScrollableProtocol changes

Author: skevy

React/Views/RCTScrollView.m

@@ -287,11 +287,6 @@ - (void)setCenterContent:(BOOL)centerContent
   _scrollView.centerContent = centerContent;
 }
 
-- (void)setContentOffset:(CGPoint)contentOffset
-{
-  [_scrollView setContentOffset:contentOffset];
-}
-
 - (void)setStickyHeaderIndices:(NSIndexSet *)headerIndices
 {
   RCTAssert(_scrollView.contentSize.width <= self.frame.size.width,

React/Views/RCTScrollableProtocol.h

@@ -18,7 +18,6 @@
 @property (nonatomic, weak) NSObject<UIScrollViewDelegate> *nativeMainScrollDelegate;
 @property (nonatomic, readonly) CGSize contentSize;
 
-- (void)setContentOffset:(CGPoint)contentOffset;
 - (void)scrollToOffset:(CGPoint)offset;
 - (void)scrollToOffset:(CGPoint)offset animated:(BOOL)animated;
 - (void)zoomToRect:(CGRect)rect animated:(BOOL)animated;