Remove the documentation for obsolete Kotlin/Native Gradle plugin
Remove the documentation for obsolete Kotlin/Native Gradle plugin

JetBrains/kotlin-native,JetBrains/kotlin-native,JetBrains/kotlin-native,JetBrains/kotlin-native,JetBrains/kotlin-native,JetBrains/kotlin-native,JetBrains/kotlin-native,JetBrains/kotlin-native,JetBrains/kotlin-native