Remove the http package from the repo.

pkg/http/test/html/client_test.dart

-// 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 client_test;
-
-import 'package:http/http.dart' as http;
-import 'package:http/browser_client.dart';
-import 'package:unittest/unittest.dart';
-
-import 'utils.dart';
-
-void main() {
-  test('#send a StreamedRequest', () {
-    var client = new BrowserClient();
-    var request = new http.StreamedRequest("POST", echoUrl);
-
-    expect(client.send(request).then((response) {
-      return response.stream.bytesToString();
-    }).whenComplete(client.close), completion(equals('{"hello": "world"}')));
-
-    request.sink.add('{"hello": "world"}'.codeUnits);
-    request.sink.close();
-  });
-
-  test('#send with an invalid URL', () {
-    var client = new BrowserClient();
-    var url = Uri.parse('http://http.invalid');
-    var request = new http.StreamedRequest("POST", url);
-
-    expect(client.send(request),
-        throwsClientException("XMLHttpRequest error."));
-
-    request.sink.add('{"hello": "world"}'.codeUnits);
-    request.sink.close();
-  });
-}