Merge boxWithStdlib testData into box, delete BoxWithStdlib test

compiler/testData/codegen/box/reflection/kClassInAnnotation/array.kt

@@ -0,0 +1,18 @@
+// WITH_REFLECT
+
+import kotlin.reflect.KClass
+
+@Retention(AnnotationRetention.RUNTIME)
+annotation class Ann(val args: Array<KClass<*>>)
+
+class O
+class K
+
+@Ann(arrayOf(O::class, K::class)) class MyClass
+
+fun box(): String {
+    val args = MyClass::class.java.getAnnotation(Ann::class.java).args
+    val argName1 = args[0].simpleName ?: "fail 1"
+    val argName2 = args[1].simpleName ?: "fail 2"
+    return argName1 + argName2
+}