Minor. Move tests

compiler/testData/codegen/box/specialBuiltins/explicitSuperCall.kt

@@ -0,0 +1,10 @@
+class A : java.util.ArrayList<String>() {
+    override val size: Int get() = super.size + 56
+}
+
+fun box(): String {
+    val a = A()
+    if (a.size != 56) return "fail: ${a.size}"
+
+    return "OK"
+}