Remove the http package from the repo.

pkg/http/lib/src/streamed_request.dart

-// Copyright (c) 2012, 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 streamed_request;
-
-import 'dart:async';
-
-import 'byte_stream.dart';
-import 'base_request.dart';
-
-/// An HTTP request where the request body is sent asynchronously after the
-/// connection has been established and the headers have been sent.
-///
-/// When the request is sent via [BaseClient.send], only the headers and
-/// whatever data has already been written to [StreamedRequest.stream] will be
-/// sent immediately. More data will be sent as soon as it's written to
-/// [StreamedRequest.sink], and when the sink is closed the request will end.
-class StreamedRequest extends BaseRequest {
-  /// The sink to which to write data that will be sent as the request body.
-  /// This may be safely written to before the request is sent; the data will be
-  /// buffered.
-  ///
-  /// Closing this signals the end of the request.
-  EventSink<List<int>> get sink => _controller.sink;
-
-  /// The controller for [sink], from which [BaseRequest] will read data for
-  /// [finalize].
-  final StreamController<List<int>> _controller;
-
-  /// Creates a new streaming request.
-  StreamedRequest(String method, Uri url)
-    : super(method, url),
-      _controller = new StreamController<List<int>>(sync: true);
-
-  /// Freezes all mutable fields other than [stream] and returns a
-  /// single-subscription [ByteStream] that emits the data being written to
-  /// [sink].
-  ByteStream finalize() {
-    super.finalize();
-    return new ByteStream(_controller.stream);
-  }
-}