feat: update build script

build.gradle

@@ -7,9 +7,6 @@ def buildJSON = JsonSlurper.newInstance().parseText(new File("build.json").text)
 def baseProjectName = buildJSON?.project?.name ?: '__project_name__';
 def jarManifestMainClass = buildJSON?.project?.main ?: 'SampleMain'
 
-if (buildJSON.application) {
-    mainClassName = jarManifestMainClass
-}
 archivesBaseName = buildJSON?.project?.archiveName ?: baseProjectName
 sourceCompatibility = 1.8
 targetCompatibility = 1.8
@@ -32,18 +29,6 @@ tasks.withType(JavaCompile) {
 // '-x test' skip unit test
 defaultTasks 'build'
 
-buildscript {
-    repositories {
-        mavenLocal()
-        maven() { url 'https://maven.aliyun.com/repository/central' }
-        mavenCentral()
-        jcenter()
-    }
-    dependencies {
-        classpath("org.springframework.boot:spring-boot-gradle-plugin:1.5.11.RELEASE")
-    }
-}
-
 jar {
     manifest {
         attributes 'Main-Class': jarManifestMainClass

build.json

@@ -4,7 +4,6 @@
     "main": "me.hatter.tools.secureeditor.Main",
     "archiveName": "secure-editor"
   },
-  "application": false,
   "java": "1.8",
   "builder": {
     "name": "gradle",