Revert "wrap_jso should wrap JsArray as well, not always call wrap on its contents"

tests/html/wrapping_collections_test.dart

Index: tests/html/wrapping_collections_test.dart
diff --git a/tests/html/wrapping_collections_test.dart b/tests/html/wrapping_collections_test.dart
deleted file mode 100644
index dc845083c28104a4feb05ac25d90e0d833e22397..0000000000000000000000000000000000000000
--- a/tests/html/wrapping_collections_test.dart
+++ /dev/null
@@ -1,26 +0,0 @@
-library wrapping_collection_test;
-
-import 'dart:html';
-import 'dart:js' as js;
-import 'package:unittest/unittest.dart';
-import 'package:unittest/html_config.dart';
-
-/// Test that if we access objects through JS-interop we get the
-/// appropriate objects, even if dart:html maps them.
-main() {
-  test("Access through JS-interop", () {
-    var performance = js.context['performance'];
-    var entries = performance.callMethod('getEntries', const []);
-    entries.forEach((x) {
-        expect(x is js.JsObject, isTrue);
-    });
-  });
-
-  test("Access through dart:html", () {
-    var dartPerformance = wrap_jso(js.context['performance']);
-    var dartEntries = dartPerformance.getEntries();
-    dartEntries.forEach((x) {
-        expect(x is PerformanceEntry, isTrue);
-    });
-  });
-}