Delete unuseful code and update sparketl appconn. #394

	#
	# Copyright 2019 WeBank.
	# Licensed to the Apache Software Foundation (ASF) under one or more
	# contributor license agreements. See the NOTICE file distributed with
	# this work for additional information regarding copyright ownership.
	# The ASF licenses this file to You under the Apache License, Version 2.0
	# (the "License"); you may not use this file except in compliance with
	# the License. You may obtain a copy of the License at
	#
	# http://www.apache.org/licenses/LICENSE-2.0
	#
	# Unless required by applicable law or agreed to in writing, software
	# distributed under the License is distributed on an "AS IS" BASIS,
	# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
	# See the License for the specific language governing permissions and
	# limitations under the License.
	#

	name: DataSphereStudio CI Actions

	on:
	push:
	pull_request:

	jobs:
	build:

	runs-on: ubuntu-latest

	strategy:
	matrix:
	node-version: [14.17.3]
	# See supported Node.js release schedule at https://nodejs.org/en/about/releases/

	steps:
	- name: Checkout
	uses: actions/checkout@v2
	- name: Set up JDK 8
	uses: actions/setup-java@v2
	with:
	distribution: 'adopt'
	java-version: 8
	- name: Use Node.js ${{ matrix.node-version }}
	uses: actions/setup-node@v2
	with:
	node-version: ${{ matrix.node-version }}
	- name: Build backend by maven
	run: \|
	mvn -N install
	mvn clean package
	- name: Build frontend by node.js
	run: \|
	cd web
	npm install lerna@4.0.0 -g
	lerna bootstrap
	npm run build

Provide feedback