Merge boxWithStdlib testData into box, delete BoxWithStdlib test

compiler/testData/codegen/box/reflection/properties/genericClassLiteralPropertyReceiverIsStar.kt

@@ -0,0 +1,12 @@
+// WITH_REFLECT
+
+import kotlin.reflect.*
+
+class A<T> {
+    val result = "OK"
+}
+
+fun box(): String {
+    val k: KProperty1<A<*>, *> = A::class.memberProperties.single()
+    return k.get(A<String>()) as String
+}