remove OSSAnnounceModal

browser/main/modal/OSSAnnounceModal.js

@@ -1,29 +0,0 @@
-import React, { PropTypes } from 'react'
-import ExternalLink from 'browser/components/ExternalLink'
-
-export default class OSSAnnounceModal extends React.Component {
-  handleCloseBtnClick (e) {
-    this.props.close()
-  }
-  render () {
-    return (
-      <div className='OSSAnnounceModal modal'>
-
-        <div className='OSSAnnounceModal-title'>Boostnote has been Open-sourced</div>
-
-        <ExternalLink className='OSSAnnounceModal-link' href='https://github.com/BoostIO/Boostnote'>
-          https://github.com/BoostIO/Boostnote
-        </ExternalLink>
-
-        <button
-          className='OSSAnnounceModal-closeBtn'
-          onClick={(e) => this.handleCloseBtnClick(e)}
-        >Close</button>
-      </div>
-    )
-  }
-}
-
-OSSAnnounceModal.propTypes = {
-  close: PropTypes.func
-}