Remove unused components

src/views/charts/keyboard.vue

-<template>
-  <div class="chart-container">
-    <chart height="100%" width="100%"/>
-  </div>
-</template>
-
-<script>
-import Chart from '@/components/element-ui/Charts/keyboard'
-
-export default {
-  name: 'KeyboardChart',
-  components: { Chart }
-}
-</script>
-
-<style scoped>
-.chart-container{
-  position: relative;
-  width: 100%;
-  height: calc(100vh - 84px);
-}
-</style>
-

src/views/charts/line.vue

-<template>
-  <div class="chart-container">
-    <chart height="100%" width="100%"/>
-  </div>
-</template>
-
-<script>
-import Chart from '@/components/element-ui/Charts/lineMarker'
-
-export default {
-  name: 'LineChart',
-  components: { Chart }
-}
-</script>
-
-<style scoped>
-.chart-container{
-  position: relative;
-  width: 100%;
-  height: calc(100vh - 84px);
-}
-</style>
-

src/views/charts/mixChart.vue

-<template>
-  <div class="chart-container">
-    <chart height="100%" width="100%"/>
-  </div>
-</template>
-
-<script>
-import Chart from '@/components/element-ui/Charts/mixChart'
-
-export default {
-  name: 'MixChart',
-  components: { Chart }
-}
-</script>
-
-<style scoped>
-.chart-container{
-  position: relative;
-  width: 100%;
-  height: calc(100vh - 84px);
-}
-</style>
-

src/views/clipboard/index.vue

-<template>
-  <div class="app-container">
-    <el-tabs v-model="activeName">
-      <el-tab-pane label="use clipboard  directly" name="directly">
-        <el-input v-model="inputData" placeholder="Please input" style="width:400px;max-width:100%;"/>
-        <el-button type="primary" icon="document" @click="handleCopy(inputData,$event)">copy</el-button>
-      </el-tab-pane>
-      <el-tab-pane label="use clipboard by v-directive" name="v-directive">
-        <el-input v-model="inputData" placeholder="Please input" style="width:400px;max-width:100%;"/>
-        <el-button v-clipboard:copy="inputData" v-clipboard:success="clipboardSuccess" type="primary" icon="document">copy</el-button>
-      </el-tab-pane>
-    </el-tabs>
-  </div>
-</template>
-
-<script>
-import clip from '@/utils/clipboard' // use clipboard directly
-import clipboard from '@/directive/clipboard/index.js' // use clipboard by v-directive
-
-export default {
-  name: 'ClipboardDemo',
-  directives: {
-    clipboard
-  },
-  data: function() {
-    return {
-      activeName: 'directly',
-      inputData: 'https://github.com/PanJiaChen/vue-element-admin'
-    }
-  },
-  methods: {
-    handleCopy(text, event) {
-      clip(text, event)
-    },
-    clipboardSuccess() {
-      this.$message({
-        message: 'Copy successfully',
-        type: 'success',
-        duration: 1500
-      })
-    }
-  }
-}
-</script>
-