JS: move RTTI tests to proper location

js/js.translator/testData/box/rtti/rttiForTrait2.kt

@@ -0,0 +1,37 @@
+package foo
+
+interface A
+interface B : A
+interface C : A
+interface D : B, C
+interface E : C
+
+open class CB : B
+class CB2 : CB()
+
+class CD : D
+
+fun testPhrase(o: Any): String {
+    var s = ""
+    s += if (o is A) "Y" else "N"
+    s += if (o is B) "Y" else "N"
+    s += if (o is C) "Y" else "N"
+    s += if (o is D) "Y" else "N"
+    s += if (o is E) "Y" else "N"
+    return s
+}
+
+fun box(): String {
+    val b = CB()
+    val b2 = CB2()
+    val d = CD()
+    val e = object : E {
+    }
+
+    if (testPhrase(b) != "YYNNN") return "bad b, it: ${testPhrase(b)}"
+    if (testPhrase(b2) != "YYNNN") return "bad b2, it: ${testPhrase(b2)}"
+    if (testPhrase(d) != "YYYYN") return "bad d, it: ${testPhrase(d)}"
+    if (testPhrase(e) != "YNYNY") return "bad e, it: ${testPhrase(e)}"
+
+    return "OK"
+}