相关方班级培训，删除班级功能

src/views/classMessage/classMessage/components/list.vue

@@ -74,6 +74,7 @@
       <el-table-column label="操作" align="center" width="200">
         <template slot-scope="{row}">
           <el-button type="primary" icon="el-icon-edit" size="mini" @click="handleEdit(row.CLASS_MESSAGE_ID)">查看</el-button>
+          <el-button v-show=" row.CLASS_STATUS === '0'" type="danger" icon="el-icon-delete" size="mini" @click="handleDelete(row.CLASS_MESSAGE_ID)">删除</el-button>
           <el-button v-show=" row.CLASS_STATUS === '1'" type="primary" size="mini" @click="uploadExcel(row)">信息反馈</el-button>
           <el-button v-if="false" v-show="del" type="danger" icon="el-icon-delete" size="mini" @click="handleDelete(row.CLASS_MESSAGE_ID)">删除</el-button>
         </template>