Revert "added frontend to gradle build"

This reverts commit 28109f0d35.

build.gradle

@@ -10,35 +10,10 @@ sourceCompatibility = '17'
 compileJava.options.encoding = 'UTF-8'
 compileTestJava.options.encoding = 'UTF-8'
 
-configurations {
-    compileOnly {
-        extendsFrom annotationProcessor
-    }
-}
-
 repositories {
     mavenCentral()
 }
 
-processResources{
-    dependsOn 'copyFrontendToBuild'
-}
-
-bootJar{
-    archiveFileName = "app.jar"
-}
-
-task copyFrontendToBuild(type: Copy) {
-    dependsOn 'npmBuild'
-    from "$projectDir/frontend/dist/"
-    into "$buildDir/resources/main/static"
-}
-
-task npmBuild(type: Exec) {
-    workingDir './frontend/'
-    commandLine 'npm','run', 'build'
-}
-
 dependencies {
     implementation 'org.springframework.boot:spring-boot-starter-test'
     implementation 'org.springframework.boot:spring-boot-starter'