Merge boxWithStdlib testData into box, delete BoxWithStdlib test

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

@@ -0,0 +1,27 @@
+// WITH_REFLECT
+
+import kotlin.reflect.*
+import kotlin.reflect.jvm.*
+
+object Obj {
+    @JvmStatic
+    private var result: String = "Fail"
+}
+
+fun box(): String {
+    val p = Obj::class.members.single { it.name == "result" } as KMutableProperty1<Any?, String>
+    p.isAccessible = true
+
+    try {
+        p.set(null, "OK")
+        return "Fail: set should check that first argument is Obj"
+    } catch (e: IllegalArgumentException) {}
+
+    try {
+        p.get(null)
+        return "Fail: get should check that first argument is Obj"
+    } catch (e: IllegalArgumentException) {}
+
+    p.set(Obj, "OK")
+    return p.get(Obj)
+}