Navigation bar

src/__test__/NavigationBar.test.js

 import React from 'react'
 import 'jest-styled-components'
-import { Action } from '@pubsweet/ui'
-import styled from 'styled-components'
-
 import { NavigationBar } from '../ui'
-
 import { create, render } from './_helpers'
 
 const menuLink = [{ to: '/', title: 'Item1 ' }, { to: '/', title: 'Item2 ' }]