Remove PropTypes from IncrementalPresenter (facebook#21343)

Summary:
Related to facebook#21342
Pull Request resolved: facebook#21343

Reviewed By: RSNara

Differential Revision: D10080219

Pulled By: TheSavior

fbshipit-source-id: 3a9108208fe6aaa7a30b99f24ceef03e884ec48a

Libraries/Components/View/ViewPropTypes.js

@@ -53,7 +53,7 @@ type DirectEventProps = $ReadOnly<{|
    *
    * See http://facebook.github.io/react-native/docs/view.html#onlayout
    */
-  onLayout?: ?(event: LayoutEvent) => void,
+  onLayout?: ?(event: LayoutEvent) => mixed,
 
   /**
    * When `accessible` is `true`, the system will invoke this function when the

Libraries/Experimental/IncrementalPresenter.js

@@ -10,14 +10,14 @@
 
 'use strict';
 
-const DeprecatedViewPropTypes = require('DeprecatedViewPropTypes');
 const IncrementalGroup = require('IncrementalGroup');
 const PropTypes = require('prop-types');
 const React = require('React');
 const View = require('View');
 
 import type {Context} from 'Incremental';
 import type {ViewStyleProp} from 'StyleSheet';
+import type {LayoutEvent} from 'CoreEventTypes';
 
 /**
  * WARNING: EXPERIMENTAL. Breaking changes will probably happen a lot and will
@@ -31,25 +31,19 @@ import type {ViewStyleProp} from 'StyleSheet';
  *
  * See Incremental.js for more info.
  */
-type Props = {
+type Props = $ReadOnly<{|
   name: string,
   disabled?: boolean,
-  onDone?: () => void,
-  onLayout?: (event: Object) => void,
+  onDone?: () => mixed,
+  onLayout?: (event: LayoutEvent) => mixed,
   style?: ViewStyleProp,
-  children?: any,
-};
+  children?: React.Node,
+|}>;
+
 class IncrementalPresenter extends React.Component<Props> {
   context: Context;
   _isDone: boolean;
 
-  static propTypes = {
-    name: PropTypes.string,
-    disabled: PropTypes.bool,
-    onDone: PropTypes.func,
-    onLayout: PropTypes.func,
-    style: DeprecatedViewPropTypes.style,
-  };
   static contextTypes = {
     incrementalGroup: PropTypes.object,
     incrementalGroupEnabled: PropTypes.bool,