删除上个版本的代码

Former-commit-id: 6bda49593a2b4816ad2b4b947fa353c6240b2a06

tests/unit/.eslintrc.js

@@ -1,8 +0,0 @@
-module.exports = {
-  env: {
-    jest: true
-  },
-  rules: {
-    'import/no-extraneous-dependencies': 'off'
-  }
-}

tests/unit/HelloWorld.spec.js

@@ -1,14 +0,0 @@
-// 暂时 D2 没有单元测试代码 此文件为自动生成
-
-import { shallowMount } from '@vue/test-utils'
-import HelloWorld from '@/components/HelloWorld.vue'
-
-describe('HelloWorld.vue', () => {
-  it('renders props.msg when passed', () => {
-    const msg = 'new message'
-    const wrapper = shallowMount(HelloWorld, {
-      propsData: { msg }
-    })
-    expect(wrapper.text()).toMatch(msg)
-  })
-})