Remove deprecated CollectionSink and Stream.pipeInto.

tests/lib/async/stream_controller_test.dart

 // Copyright (c) 2011, 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.
 
 // Test the basic StreamController and StreamController.singleSubscription.
 library stream_controller_test;
 
 import "package:expect/expect.dart";
 import 'dart:async';
 import 'event_helper.dart';
@@ skipping 214 matching lines @@
                                ..add(1)..add(2)..add(3)..add(4)
                                ..close();
   actualEvents = new Events.capture(c.stream.expand((v) {
     var l = [];
     for (int i = 0; i < v; i++) l.add(i + 1);
     return l;
   }));
   sentEvents.replay(c);
   Expect.listEquals(expectedEvents.events, actualEvents.events);
 
-  // pipe is tested asynchronously and therefore not in this file.
-  c = new StreamController();
-  var list = <int>[];
-  c.stream.pipeInto(new CollectionSink<int>(list))
-   .whenComplete(() { Expect.listEquals(<int>[1,2,9,3,9], list); });
-  c.add(1);
-  c.add(2);
-  c.add(9);
-  c.add(3);
-  c.add(9);
-  c.close();
-
   // test contains.
   {
     c = new StreamController();
     // Error after match is not important.
     sentEvents = new Events()..add("a")..add("x")..error("FAIL")..close();
     Future<bool> contains = c.stream.contains("x");
     contains.then((var c) {
       Expect.isTrue(c);
     });
     sentEvents.replay(c);
@@ skipping 153 matching lines @@
     Expect.isTrue(c.isClosed);
   }
 }
 
 main() {
   testMultiController();
   testSingleController();
   testExtraMethods();
   testClosed();
 }