Remove "unnecessary" imports. (#74383)

dev/integration_tests/android_semantics_testing/lib/main.dart

@@ -12,7 +12,6 @@ import 'package:flutter_driver/driver_extension.dart';
 
 import 'src/tests/controls_page.dart';
 import 'src/tests/headings_page.dart';
-import 'src/tests/popup_constants.dart';
 import 'src/tests/popup_page.dart';
 import 'src/tests/text_field_page.dart';
 

dev/integration_tests/android_semantics_testing/lib/src/tests/controls_page.dart

@@ -3,7 +3,6 @@
 // found in the LICENSE file.
 
 import 'package:flutter/material.dart';
-import 'package:flutter/widgets.dart';
 
 import 'controls_constants.dart';
 export 'controls_constants.dart';

dev/integration_tests/android_semantics_testing/lib/src/tests/headings_page.dart

@@ -3,7 +3,6 @@
 // found in the LICENSE file.
 
 import 'package:flutter/material.dart';
-import 'package:flutter/widgets.dart';
 
 import 'headings_constants.dart';
 export 'headings_constants.dart';

dev/integration_tests/android_views/lib/motion_events_page.dart

@@ -4,7 +4,6 @@
 
 import 'dart:async';
 import 'dart:io';
-import 'dart:typed_data';
 
 import 'package:flutter/material.dart';
 import 'package:flutter/services.dart';

dev/integration_tests/android_views/lib/wm_integrations.dart

@@ -3,11 +3,9 @@
 // found in the LICENSE file.
 
 import 'dart:io';
-import 'dart:ui';
 
 import 'package:flutter/material.dart';
 import 'package:flutter/services.dart';
-import 'package:flutter/widgets.dart';
 
 import 'page.dart';
 

dev/integration_tests/channels/lib/src/basic_messaging.dart

@@ -3,7 +3,6 @@
 // found in the LICENSE file.
 
 import 'dart:async';
-import 'dart:typed_data';
 import 'package:flutter/services.dart';
 import 'package:flutter/foundation.dart' show ReadBuffer, WriteBuffer;
 import 'pair.dart';

dev/integration_tests/flutter_gallery/lib/demo/material/cards_demo.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/foundation.dart';
 import 'package:flutter/material.dart';
 
 import '../../gallery/demo.dart';

dev/integration_tests/flutter_gallery/lib/demo/material/data_table_demo.dart

@@ -3,7 +3,6 @@
 // found in the LICENSE file.
 
 import 'package:flutter/material.dart';
-import 'package:flutter/rendering.dart';
 
 import '../../gallery/demo.dart';
 

dev/integration_tests/flutter_gallery/lib/demo/material/reorderable_list_demo.dart

@@ -2,9 +2,7 @@
 // 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/material.dart';
-import 'package:flutter/rendering.dart';
 
 import '../../gallery/demo.dart';
 

dev/integration_tests/flutter_gallery/lib/demo/pesto_demo.dart

@@ -3,7 +3,6 @@
 // found in the LICENSE file.
 
 import 'package:flutter/material.dart';
-import 'package:flutter/rendering.dart';
 
 class PestoDemo extends StatelessWidget {
   const PestoDemo({ Key? key }) : super(key: key);

dev/integration_tests/flutter_gallery/lib/demo/shrine/supplemental/cut_corners_border.dart

@@ -5,7 +5,6 @@
 import 'dart:ui' show lerpDouble;
 
 import 'package:flutter/material.dart';
-import 'package:flutter/widgets.dart';
 
 class CutCornersBorder extends OutlineInputBorder {
   const CutCornersBorder({

dev/integration_tests/flutter_gallery/lib/gallery/backdrop.dart

@@ -4,7 +4,6 @@
 
 import 'dart:math' as math;
 
-import 'package:flutter/rendering.dart';
 import 'package:flutter/material.dart';
 
 const double _kFrontHeadingHeight = 32.0; // front layer beveled rectangle

dev/integration_tests/flutter_gallery/test/live_smoketest.dart

@@ -14,7 +14,6 @@ import 'package:flutter/cupertino.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter/scheduler.dart';
 import 'package:flutter/services.dart';
-import 'package:flutter/widgets.dart';
 import 'package:flutter/gestures.dart' show kPrimaryButton;
 import 'package:flutter_test/flutter_test.dart';
 

dev/integration_tests/flutter_gallery/test_driver/run_demos.dart

@@ -2,11 +2,8 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-import 'dart:ui';
-
 import 'package:flutter/cupertino.dart';
 import 'package:flutter/foundation.dart';
-import 'package:flutter/widgets.dart';
 import 'package:flutter_test/flutter_test.dart';
 
 import 'package:flutter_gallery/demo_lists.dart';

dev/integration_tests/hybrid_android_views/lib/motion_events_page.dart

@@ -4,7 +4,6 @@
 
 import 'dart:async';
 import 'dart:io';
-import 'dart:typed_data';
 
 import 'package:flutter/material.dart';
 import 'package:flutter/services.dart';

dev/integration_tests/hybrid_android_views/lib/nested_view_event_page.dart

@@ -3,11 +3,9 @@
 // found in the LICENSE file.
 
 import 'dart:io';
-import 'dart:ui';
 
 import 'package:flutter/material.dart';
 import 'package:flutter/services.dart';
-import 'package:flutter/widgets.dart';
 
 import 'android_platform_view.dart';
 import 'future_data_handler.dart';

dev/integration_tests/ios_add2app_life_cycle/flutterapp/lib/main.dart

@@ -6,7 +6,6 @@ import 'dart:ui' as ui;
 import 'package:flutter/material.dart';
 import 'package:flutter/rendering.dart';
 import 'package:flutter/services.dart';
-import 'package:flutter/foundation.dart';
 import 'package:collection/collection.dart';
 
 VoidCallback originalSemanticsListener;

dev/integration_tests/ui/lib/driver.dart

@@ -3,7 +3,6 @@
 // found in the LICENSE file.
 
 import 'package:flutter/material.dart';
-import 'package:flutter/widgets.dart';
 import 'package:flutter_driver/driver_extension.dart';
 
 void main() {

dev/integration_tests/ui/lib/main.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/widgets.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter_driver/driver_extension.dart';