diff --git a/utils/tests/archive/data/test-archive.tar.gz b/utils/tests/archive/data/test-archive.tar.gz
deleted file mode 100644
index a5e83364d56..00000000000
Binary files a/utils/tests/archive/data/test-archive.tar.gz and /dev/null differ
diff --git a/utils/tests/archive/reader_test.dart b/utils/tests/archive/reader_test.dart
deleted file mode 100644
index e95d5ddcf0e..00000000000
--- a/utils/tests/archive/reader_test.dart
+++ /dev/null
@@ -1,200 +0,0 @@
-// 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 reader_test;
-
-import 'dart:io';
-import '../../../pkg/unittest/lib/unittest.dart'
-import '../../archive/archive.dart';
-
-final String dataPath = "utils/tests/archive/data";
-
-main() {
-  test('reading a .tar.gz file', () {
-    var asyncDone = expectAsync0(() {});
-
-    var reader = new ArchiveReader();
-    reader.format.tar = true;
-    reader.filter.gzip = true;
-
-    var future = reader.openFilename("$dataPath/test-archive.tar.gz")
-      .then((input) {
-      var log = <String>[];
-      input.onEntry = (entry) => guardAsync(() {
-        log.add("Entry: ${entry.pathname}");
-        var stream = new StringInputStream(entry.openInputStream());
-        stream.onData = () => log.add("Contents: ${stream.read().trim()}");
-        stream.onClosed = () => log.add("Closed: ${entry.pathname}");
-      });
-      input.onError = registerException;
-
-      input.onClosed = () => guardAsync(() {
-        expect(log, orderedEquals([
-          "Entry: filename1",
-          "Contents: contents 1",
-          "Closed: filename1",
-
-          "Entry: filename2",
-          "Contents: contents 2",
-          "Closed: filename2",
-
-          "Entry: filename3",
-          "Contents: contents 3",
-          "Closed: filename3",
-        ]));
-      }, asyncDone);
-    });
-
-    expect(future, completes);
-  });
-
-  test('reading a .tar.gz file with readAll', () {
-    var reader = new ArchiveReader();
-    reader.format.tar = true;
-    reader.filter.gzip = true;
-
-    var future = reader.openFilename("$dataPath/test-archive.tar.gz")
-      .then((input) => input.readAll())
-      .then((entries) {
-      entries = entries
-          .map((entry) => [entry.pathname, entry.contents.trim()])
-          .toList();
-      expect(entries[0], orderedEquals(["filename1", "contents 1"]));
-      expect(entries[1], orderedEquals(["filename2", "contents 2"]));
-      expect(entries[2], orderedEquals(["filename3", "contents 3"]));
-    });
-
-    expect(future, completes);
-  });
-
-  test('reading an in-memory .tar.gz', () {
-    var asyncDone = expectAsync0(() {});
-
-    var reader = new ArchiveReader();
-    reader.format.tar = true;
-    reader.filter.gzip = true;
-
-    var future = new File("$dataPath/test-archive.tar.gz").readAsBytes()
-      .then((bytes) => reader.openData(bytes))
-      .then((input) {
-      var log = <String>[];
-      input.onEntry = (entry) => guardAsync(() {
-        log.add("Entry: ${entry.pathname}");
-        var stream = new StringInputStream(entry.openInputStream());
-        stream.onData = () => log.add("Contents: ${stream.read().trim()}");
-        stream.onClosed = () => log.add("Closed: ${entry.pathname}");
-      });
-      input.onError = registerException;
-
-      input.onClosed = () => guardAsync(() {
-        expect(log, orderedEquals([
-          "Entry: filename1",
-          "Contents: contents 1",
-          "Closed: filename1",
-
-          "Entry: filename2",
-          "Contents: contents 2",
-          "Closed: filename2",
-
-          "Entry: filename3",
-          "Contents: contents 3",
-          "Closed: filename3",
-        ]));
-      }, asyncDone);
-    });
-
-    expect(future, completes);
-  });
-
-  test("closing entries before they're read", () {
-    var asyncDone = expectAsync0(() {});
-
-    var reader = new ArchiveReader();
-    reader.format.tar = true;
-    reader.filter.gzip = true;
-
-    var future = reader.openFilename("$dataPath/test-archive.tar.gz")
-      .then((input) {
-      var log = <String>[];
-      input.onEntry = (entry) => guardAsync(() {
-        log.add("Entry: ${entry.pathname}");
-        var underlyingStream = entry.openInputStream();
-        var stream = new StringInputStream(underlyingStream);
-        stream.onData = () => log.add("Contents: ${stream.read().trim()}");
-        stream.onClosed = () => log.add("Closed: ${entry.pathname}");
-        underlyingStream.close();
-      });
-      input.onError = registerException;
-
-      input.onClosed = () => guardAsync(() {
-        expect(log, orderedEquals([
-          "Entry: filename1",
-          "Closed: filename1",
-
-          "Entry: filename2",
-          "Closed: filename2",
-
-          "Entry: filename3",
-          "Closed: filename3",
-        ]));
-      }, asyncDone);
-    });
-
-    expect(future, completes);
-  });
-
-  test("closing an archive stream before it's finished", () {
-    var asyncDone = expectAsync0(() {});
-
-    var reader = new ArchiveReader();
-    reader.format.tar = true;
-    reader.filter.gzip = true;
-
-    var future = reader.openFilename("$dataPath/test-archive.tar.gz")
-      .then((input) {
-      var count = 0;
-
-      var log = <String>[];
-      input.onEntry = (entry) => guardAsync(() {
-        count += 1;
-
-        log.add("Entry: ${entry.pathname}");
-        var underlyingStream = entry.openInputStream();
-        var stream = new StringInputStream(underlyingStream);
-        stream.onData = () => log.add("Contents: ${stream.read().trim()}");
-        stream.onClosed = () => log.add("Closed: ${entry.pathname}");
-
-        if (count == 2) {
-          input.close();
-          expect(input.closed);
-        }
-      });
-      input.onError = registerException;
-
-      input.onClosed = () {
-        expect(log, orderedEquals([
-          "Entry: filename1",
-          "Contents: contents 1",
-          "Closed: filename1",
-
-          "Entry: filename2",
-          "Closed: filename2",
-        ]));
-        asyncDone();
-      };
-    });
-
-    expect(future, completes);
-  });
-
-  test("opening a non-existent archive", () {
-    var reader = new ArchiveReader();
-    reader.format.tar = true;
-    reader.filter.gzip = true;
-
-    expect(reader.openFilename("$dataPath/non-existent.tar.gz"),
-      throwsA((e) => e is ArchiveException));
-  });
-}
-
diff --git a/utils/tests/archive/utils_test.dart b/utils/tests/archive/utils_test.dart
deleted file mode 100644
index bd51d75ff69..00000000000
--- a/utils/tests/archive/utils_test.dart
+++ /dev/null
@@ -1,42 +0,0 @@
-// 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 utils_test;
-
-import '../../../pkg/unittest/lib/unittest.dart';
-import '../../archive/utils.dart';
-
-main() {
-  // TODO(nweiz): re-enable this once issue 4378 is fixed.
-  return;
-
-  group('attachFinalizer', () {
-    test('calls the finalizer eventually once the object is collected', () {
-      var finalized = null;
-
-      void finalizer(String data) {
-        finalized = data;
-      }
-
-      while (finalized == null) {
-        var list = [1, 2, 3];
-        attachFinalizer(list, finalizer, 'finally finalized!');
-      }
-
-      expect(finalized, equals('finally finalized!'));
-    });
-
-    test("doesn't call the finalizer while the object is in scope", () {
-      var finalized = null;
-
-      void finalizer(String data) {
-        finalized = data;
-      }
-
-      var list = [1, 2, 3];
-      attachFinalizer(list, finalizer, 'finally finalized!');
-      expect(finalized, isNull);
-    });
-  });
-}