Revert facebook#17927

Summary:
This change is a revert of [facebook#17927](facebook#17927) pull-request.
The pull-request caused an issue with the keyboard covering the text field at the bottom of the scroll view.

Reviewed By: shergin

Differential Revision: D7246609

fbshipit-source-id: 149f825274c4fa79ab593f1bae3602667d16ddee

React/Views/ScrollView/RCTScrollView.m

@@ -575,9 +575,6 @@ - (void)scrollToOffset:(CGPoint)offset
 - (void)scrollToOffset:(CGPoint)offset animated:(BOOL)animated
 {
   if (!CGPointEqualToPoint(_scrollView.contentOffset, offset)) {
-    CGFloat maxOffsetX = _scrollView.contentSize.width - _scrollView.bounds.size.width + _scrollView.contentInset.right;
-    CGFloat maxOffsetY = _scrollView.contentSize.height - _scrollView.bounds.size.height + _scrollView.contentInset.bottom;
-    offset = CGPointMake(MAX(0, MIN(maxOffsetX, offset.x)), MAX(0, MIN(maxOffsetY, offset.y)));
     // Ensure at least one scroll event will fire
     _allowNextScrollNoMatterWhat = YES;
     [_scrollView setContentOffset:offset animated:animated];