Revert "Gradle plugin: fix --include-build workflow"

This reverts commit fce134ee56.

settings.gradle

@@ -25,4 +25,4 @@ include ':runtime'
 include ':common'
 include ':backend.native:tests'
 include ':tools:helpers'
-include ':tools:kotlin-native-gradle-plugin'
+include ':tools:gradle-plugin'

tools/gradle-plugin/build.gradle

@@ -20,9 +20,6 @@ apply plugin: 'kotlin'
 apply plugin: 'maven-publish'
 apply plugin: 'com.jfrog.bintray'
 
-group = 'org.jetbrains.kotlin'
-version = konanVersion
-
 // TODO: move this code to top level (the same for backend.native)
 // Copied from backend.native
 allprojects {
@@ -83,6 +80,9 @@ publishing {
     publications {
         gradlePlugin(MavenPublication) {
             artifact jar
+            groupId 'org.jetbrains.kotlin'
+            artifactId 'kotlin-native-gradle-plugin'
+            version konanVersion
             pom.withXml { XmlProvider xml ->
                 def stdlibDep = xml.asNode().appendNode("dependencies").appendNode("dependency")
                 stdlibDep.appendNode("groupId", "org.jetbrains.kotlin")
@@ -111,4 +111,4 @@ bintray {
         override = project.hasProperty("override")
     }
     publications = ['gradlePlugin']
-}
+}