WT 1.1.25+3 flutter 2.8, activate training plan

lib/library/dropdown_search/dropdown_search.dart

@@ -2,9 +2,7 @@ library dropdown_search;
 
 import 'dart:async';
 
-import 'package:flutter/cupertino.dart';
 import 'package:flutter/material.dart';
-import 'package:flutter/rendering.dart';
 
 import 'popup_menu.dart';
 import 'select_dialog.dart';

lib/library/dropdown_search/popup_menu.dart

@@ -3,7 +3,6 @@ import 'dart:async';
 import 'package:flutter/foundation.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter/rendering.dart';
-import 'package:flutter/widgets.dart';
 
 const Duration _kMenuDuration = Duration(milliseconds: 300);
 const double _kMenuCloseIntervalEnd = 2.0 / 3.0;

lib/library/gradient_bottom_navigation_bar.dart

@@ -8,7 +8,6 @@ import 'dart:collection' show Queue;
 import 'dart:math' as math;
 
 import 'package:flutter/material.dart';
-import 'package:flutter/widgets.dart';
 import 'package:vector_math/vector_math_64.dart' show Vector3;
 
 const double _kActiveFontSize = 14.0;

lib/library/radar_chart.dart

@@ -1,6 +1,5 @@
 library flutter_radar_chart;
 
-import 'dart:ui';
 import 'dart:math' as math;
 
 import 'package:flutter/material.dart';

lib/library/super_tooltip.dart

@@ -2,7 +2,6 @@ import 'dart:math';
 import 'dart:ui' as ui;
 
 import 'package:flutter/material.dart';
-import 'package:flutter/widgets.dart';
 
 enum TooltipDirection { up, down, left, right }
 enum ShowCloseButton { inside, outside, none }