diff --git a/sdk/lib/widgets/drawer.dart b/sdk/lib/widgets/drawer.dart
index 5a2501a7850..1a577bcd462 100644
--- a/sdk/lib/widgets/drawer.dart
+++ b/sdk/lib/widgets/drawer.dart
@@ -2,12 +2,8 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-import 'dart:math' as math;
 import 'dart:sky' as sky;
 
-import 'package:vector_math/vector_math.dart';
-
-import '../animation/animated_value.dart';
 import '../animation/animation_performance.dart';
 import '../animation/curves.dart';
 import '../theme/colors.dart';
diff --git a/sdk/lib/widgets/material.dart b/sdk/lib/widgets/material.dart
index 24cc98b27c8..44b68649302 100644
--- a/sdk/lib/widgets/material.dart
+++ b/sdk/lib/widgets/material.dart
@@ -2,7 +2,6 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-import '../base/lerp.dart';
 import '../animation/animated_value.dart';
 import '../painting/box_painter.dart';
 import '../theme/edges.dart';