ScrollView: Couple of unnecessary checks was removed from RCTCustomScrollView

Summary:
* Now `setFrame:` is called by autoresizing masks, so it is safe.
* Nobody calls `setBounds:`, so it is also safe.

Reviewed By: javache

Differential Revision: D5414441

fbshipit-source-id: 6fc51c7598c4817301db51f627aa1e9840642fec

React/Views/RCTScrollView.m

@@ -301,30 +301,8 @@ RCT_NOT_IMPLEMENTED(- (instancetype)init)
   super.contentOffset = contentOffset;
 }
 
-static inline BOOL isRectInvalid(CGRect rect) {
-  return isnan(rect.origin.x) || isinf(rect.origin.x) ||
-    isnan(rect.origin.y) || isinf(rect.origin.y) ||
-    isnan(rect.size.width) || isinf(rect.size.width) ||
-    isnan(rect.size.height) || isinf(rect.size.height);
-}
-
-- (void)setBounds:(CGRect)bounds
-{
-  if (isRectInvalid(bounds)) {
-    RCTLogError(@"Attempted to set an invalid bounds to inner scrollview: %@", NSStringFromCGRect(bounds));
-    return;
-  }
-
-  [super setBounds:bounds];
-}
-
 - (void)setFrame:(CGRect)frame
 {
-  if (isRectInvalid(frame)) {
-    RCTLogError(@"Attempted to set an invalid frame to inner scrollview: %@", NSStringFromCGRect(frame));
-    return;
-  }
-
   // Preserving and revalidating `contentOffset`.
   CGPoint originalOffset = self.contentOffset;