Fix align-content:strech overriding align-item

Summary:
Fix for facebook#413. This was a hangover from a previous attept to fix other align-content problems.
Closes facebook/yoga#417

Reviewed By: astreet

Differential Revision: D4604727

Pulled By: emilsjolander

fbshipit-source-id: 92fd31a385d8182c6b201c891d5ae478372d525d

ReactCommon/yoga/yoga/Yoga.c

@@ -2666,8 +2666,7 @@ static void YGNodelayoutImpl(const YGNodeRef node,
   }
 
   // STEP 8: MULTI-LINE CONTENT ALIGNMENT
-  if (performLayout &&
-      (lineCount > 1 || node->style.alignContent == YGAlignStretch || YGIsBaselineLayout(node)) &&
+  if (performLayout && (lineCount > 1 || YGIsBaselineLayout(node)) &&
       !YGFloatIsUndefined(availableInnerCrossDim)) {
     const float remainingAlignContentDim = availableInnerCrossDim - totalLineCrossDim;