[KMP] Fix incorrect transitiveSuperclassActualization_java.kt test

Review: https://jetbrains.team/p/kt/reviews/13094

I made the test to look like transitiveSuperclassActualization.kt

`actual typealias A = A_J` is incorrect because `A` isn't expect

If I kept the test "as it's", then it would become red once KT-63550 is
fixed

compiler/testData/codegen/box/multiplatform/k2/basic/transitiveSuperclassActualization_java.kt

@@ -16,11 +16,8 @@ fun commonBox(): String {
 }
 
 // MODULE: platform-jvm()()(common)
-// FILE: A_J.java
-public class A_J {}
-
 // FILE: B_J.java
-public class B_J extends A_J {
+public class B_J extends A {
     public String foo() { return "O"; }
 }
 
@@ -30,7 +27,6 @@ public class C2_J extends B_J {
 }
 
 // FILE: main.kt
-actual typealias A = A_J
 actual class C1 : B_J()
 actual typealias C2 = C2_J