Remove redundant style field from ScrollView propTypes.

Summary:
We're spreading this in via `...ViewPropTypes` also.  Having both confuses
flow when you try to pass style (even though they're identical), when the
types are defined via `React.ElementProps`

Reviewed By: jingc

Differential Revision: D6028659

fbshipit-source-id: 203e29682d34f1648a47d9ddbaef0c9630fbcb99

Libraries/Components/ScrollView/ScrollView.js

@@ -331,7 +331,6 @@ const ScrollView = createReactClass({
      * with `horizontal={true}`.
      */
     stickyHeaderIndices: PropTypes.arrayOf(PropTypes.number),
-    style: StyleSheetPropType(ViewStylePropTypes),
     /**
      * When set, causes the scroll view to stop at multiples of the value of
      * `snapToInterval`. This can be used for paginating through children