Remove the http package from the repo.

pkg/http/test/html/utils.dart

Index: pkg/http/test/html/utils.dart
diff --git a/pkg/http/test/html/utils.dart b/pkg/http/test/html/utils.dart
deleted file mode 100644
index 243278ea7fde4aae653b4619f740be6db8f10eae..0000000000000000000000000000000000000000
--- a/pkg/http/test/html/utils.dart
+++ /dev/null
@@ -1,13 +0,0 @@
-// Copyright (c) 2014, the Dart project authors.  Please see the AUTHORS file
-// for details. All rights reserved. Use of this source code is governed by a
-// BSD-style license that can be found in the LICENSE file.
-
-library http.test.html_utils;
-
-import 'dart:html';
-
-export '../utils.dart';
-
-/// The test server's echo URL.
-Uri get echoUrl => Uri.parse(
-    '${window.location.protocol}//${window.location.host}/echo');