Setup publications with MPP Gradle metadata for kotlin-test library

Move publication configuration from individual platform specific
kotlin-test- modules to the root module.

KT-40225

libraries/kotlin.test/js/build.gradle

@@ -2,8 +2,6 @@ description = 'Kotlin Test for JS'
 
 apply plugin: 'kotlin-platform-js'
 
-configurePublishing(project)
-
 configurations {
     distJs
     distLibrary
@@ -76,7 +74,6 @@ task sourcesJar(type: Jar, dependsOn: classes) {
 artifacts {
     runtime libraryJarWithIr
     archives libraryJarWithIr
-    publishedRuntime libraryJarWithIr
     distLibrary libraryJarWithIr
     archives sourcesJar
     distJs(file(compileKotlin2Js.kotlinOptions.outputFile)) {