diff --git a/packages/flutter/lib/src/cupertino/text_selection.dart b/packages/flutter/lib/src/cupertino/text_selection.dart
index 56b0cdd26d..f41dcb9dcd 100644
--- a/packages/flutter/lib/src/cupertino/text_selection.dart
+++ b/packages/flutter/lib/src/cupertino/text_selection.dart
@@ -6,7 +6,6 @@ import 'dart:math' as math;
 
 import 'package:flutter/widgets.dart';
 import 'package:flutter/rendering.dart';
-import 'package:flutter/services.dart';
 
 import 'localizations.dart';
 import 'text_selection_toolbar.dart';
diff --git a/packages/flutter/lib/src/material/bottom_navigation_bar.dart b/packages/flutter/lib/src/material/bottom_navigation_bar.dart
index e5c3009104..851ef9a55c 100644
--- a/packages/flutter/lib/src/material/bottom_navigation_bar.dart
+++ b/packages/flutter/lib/src/material/bottom_navigation_bar.dart
@@ -6,7 +6,6 @@ import 'dart:collection' show Queue;
 import 'dart:math' as math;
 
 import 'package:flutter/widgets.dart';
-import 'package:flutter/rendering.dart';
 import 'package:vector_math/vector_math_64.dart' show Vector3;
 
 import 'bottom_navigation_bar_theme.dart';
diff --git a/packages/flutter/lib/src/material/checkbox.dart b/packages/flutter/lib/src/material/checkbox.dart
index 1b12b215c8..13530c4be0 100644
--- a/packages/flutter/lib/src/material/checkbox.dart
+++ b/packages/flutter/lib/src/material/checkbox.dart
@@ -2,10 +2,6 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-import 'package:flutter/foundation.dart';
-import 'package:flutter/gestures.dart';
-
-import 'package:flutter/rendering.dart';
 import 'package:flutter/widgets.dart';
 
 import 'constants.dart';
diff --git a/packages/flutter/lib/src/material/elevated_button.dart b/packages/flutter/lib/src/material/elevated_button.dart
index 69856f27e7..94d8e8f8c0 100644
--- a/packages/flutter/lib/src/material/elevated_button.dart
+++ b/packages/flutter/lib/src/material/elevated_button.dart
@@ -6,7 +6,6 @@ import 'dart:math' as math;
 import 'dart:ui' show lerpDouble;
 
 import 'package:flutter/foundation.dart';
-import 'package:flutter/rendering.dart';
 import 'package:flutter/widgets.dart';
 
 import 'button_style.dart';
diff --git a/packages/flutter/lib/src/material/flat_button.dart b/packages/flutter/lib/src/material/flat_button.dart
index 60f9243c71..2af6c6cc3a 100644
--- a/packages/flutter/lib/src/material/flat_button.dart
+++ b/packages/flutter/lib/src/material/flat_button.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 'package:flutter/rendering.dart';
 import 'package:flutter/widgets.dart';
 
 import 'button.dart';
diff --git a/packages/flutter/lib/src/material/outlined_button.dart b/packages/flutter/lib/src/material/outlined_button.dart
index af10f032c1..9875a18693 100644
--- a/packages/flutter/lib/src/material/outlined_button.dart
+++ b/packages/flutter/lib/src/material/outlined_button.dart
@@ -6,7 +6,6 @@ import 'dart:math' as math;
 import 'dart:ui' show lerpDouble;
 
 import 'package:flutter/foundation.dart';
-import 'package:flutter/rendering.dart';
 import 'package:flutter/widgets.dart';
 
 import 'button_style.dart';
diff --git a/packages/flutter/lib/src/material/paginated_data_table.dart b/packages/flutter/lib/src/material/paginated_data_table.dart
index 293cfe9ccd..b49cd51f9e 100644
--- a/packages/flutter/lib/src/material/paginated_data_table.dart
+++ b/packages/flutter/lib/src/material/paginated_data_table.dart
@@ -5,7 +5,6 @@
 import 'dart:math' as math;
 
 import 'package:flutter/gestures.dart' show DragStartBehavior;
-import 'package:flutter/rendering.dart';
 import 'package:flutter/widgets.dart';
 
 import 'button_bar.dart';
diff --git a/packages/flutter/lib/src/material/radio.dart b/packages/flutter/lib/src/material/radio.dart
index cf9d7463ac..65c5b692d5 100644
--- a/packages/flutter/lib/src/material/radio.dart
+++ b/packages/flutter/lib/src/material/radio.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 'package:flutter/rendering.dart';
 import 'package:flutter/widgets.dart';
 
 import 'constants.dart';
diff --git a/packages/flutter/lib/src/material/text_button.dart b/packages/flutter/lib/src/material/text_button.dart
index 5e1f171bbd..7642435f57 100644
--- a/packages/flutter/lib/src/material/text_button.dart
+++ b/packages/flutter/lib/src/material/text_button.dart
@@ -6,7 +6,6 @@ import 'dart:math' as math;
 import 'dart:ui' show lerpDouble;
 
 import 'package:flutter/foundation.dart';
-import 'package:flutter/rendering.dart';
 import 'package:flutter/widgets.dart';
 
 import 'button_style.dart';
diff --git a/packages/flutter/lib/src/material/toggleable.dart b/packages/flutter/lib/src/material/toggleable.dart
index cfb3ad8899..5836cf9a02 100644
--- a/packages/flutter/lib/src/material/toggleable.dart
+++ b/packages/flutter/lib/src/material/toggleable.dart
@@ -2,9 +2,6 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-import 'package:flutter/animation.dart';
-import 'package:flutter/foundation.dart';
-import 'package:flutter/gestures.dart';
 import 'package:flutter/rendering.dart';
 import 'package:flutter/widgets.dart';
 
diff --git a/packages/flutter/lib/src/rendering/platform_view.dart b/packages/flutter/lib/src/rendering/platform_view.dart
index ee5076a9d7..62013c9195 100644
--- a/packages/flutter/lib/src/rendering/platform_view.dart
+++ b/packages/flutter/lib/src/rendering/platform_view.dart
@@ -11,7 +11,6 @@ import 'package:flutter/services.dart';
 
 import 'box.dart';
 import 'layer.dart';
-import 'mouse_tracker.dart';
 import 'object.dart';
 
 
diff --git a/packages/flutter/lib/src/rendering/proxy_box.dart b/packages/flutter/lib/src/rendering/proxy_box.dart
index 2b277eb7f2..5b96e48bc9 100644
--- a/packages/flutter/lib/src/rendering/proxy_box.dart
+++ b/packages/flutter/lib/src/rendering/proxy_box.dart
@@ -15,7 +15,6 @@ import 'package:vector_math/vector_math_64.dart';
 import 'box.dart';
 import 'layer.dart';
 import 'layout_helper.dart';
-import 'mouse_tracker.dart';
 import 'object.dart';
 
 export 'package:flutter/gestures.dart' show
diff --git a/packages/flutter/lib/src/widgets/default_text_editing_actions.dart b/packages/flutter/lib/src/widgets/default_text_editing_actions.dart
index aef411d846..13ee114fcc 100644
--- a/packages/flutter/lib/src/widgets/default_text_editing_actions.dart
+++ b/packages/flutter/lib/src/widgets/default_text_editing_actions.dart
@@ -2,8 +2,6 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-import 'package:flutter/foundation.dart';
-
 import 'actions.dart';
 import 'editable_text.dart';
 import 'framework.dart';