delete unused library

packages/app/src/components/Page/ShareLinkAlert.jsx

@@ -1,6 +1,5 @@
 import React from 'react';
 
-import PropTypes from 'prop-types';
 import { useTranslation } from 'react-i18next';
 
 const ShareLinkAlert = () => {

packages/app/src/components/TrashPageList.jsx

@@ -1,6 +1,5 @@
 import React, { useMemo } from 'react';
 
-import PropTypes from 'prop-types';
 import { useTranslation } from 'react-i18next';
 
 import CustomNavAndContents from './CustomNavigation/CustomNavAndContents';