[Test] Migrate Parcelize tests to new test infrastructure

plugins/parcelize/parcelize-compiler/testData/codegen/duplicatingClinit.kt

@@ -1,4 +1,4 @@
-// CURIOUS_ABOUT <clinit>
+// CURIOUS_ABOUT: <clinit>
 // WITH_RUNTIME
 
 import kotlinx.parcelize.*
@@ -11,4 +11,4 @@ class User(val firstName: String) : Parcelable {
         @JvmStatic
         private val test = StringBuilder()
     }
-}
+}