Revert native-config-integration sample changes

Author: Aleksandar Gradinac

samples/native-config-integration/build.gradle

@@ -70,6 +70,10 @@ tasks.withType(Test).configureEach {
 graalvmNative {
     metadataRepository {
         enabled = true
+        def extension = System.getProperty("extension", '')
+        def repo = file("config-directory${extension ? '.' + extension : ''}")
+        println("Using config repo: $repo")
+        uri(repo)
     }
     binaries.all {
         verbose = true