Merge boxWithStdlib testData into box, delete BoxWithStdlib test

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

@@ -0,0 +1,21 @@
+// WITH_REFLECT
+
+import kotlin.reflect.*
+import kotlin.reflect.jvm.*
+
+class K(private val value: String)
+
+fun box(): String {
+    val p = K::class.java.kotlin.memberProperties.single() as KProperty1<K, String>
+
+    try {
+        return p.get(K("Fail: private property should not be accessible by default"))
+    }
+    catch (e: IllegalCallableAccessException) {
+        // OK
+    }
+
+    p.isAccessible = true
+
+    return p.get(K("OK"))
+}