remove PropTypes

Author: 2534290808

Util.js

@@ -1,5 +1,3 @@
-import {PropTypes as ReactPropTypes} from 'react';
-import * as PTPropTypes from 'prop-types';
 import {
     View,
     BackHandler,
@@ -9,5 +7,3 @@ import {
 
 export const ViewPropTypes = RNViewPropTypes || View.propTypes;
 export const BackAndroid = BackHandler || DeprecatedBackAndroid;
-export const PropTypes=PTPropTypes || PropTypes;
-