fix flatlist props being undefined in ios

Author: dieguezz

packages/react-native/Libraries/Lists/FlatList.js

@@ -308,7 +308,6 @@ export type Props<ItemT> = {
  * Also inherits [ScrollView Props](docs/scrollview.html#props), unless it is nested in another FlatList of same orientation.
  */
 class FlatList<ItemT> extends React.PureComponent<Props<ItemT>, void> {
-  props: Props<ItemT>;
   /**
    * Scrolls to the end of the content. May be janky without `getItemLayout` prop.
    */