title: Accidentally deleted dart package in Flutter
body: <p>I accidentally deleted flutter_material_color_picker-1.1.0+2 package folder that was part of flutter-settings-screens. Now when I try to run the app I get this error:</p>
  <blockquote>
  <p>../../MobileDev/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_settings_screens-0.2.2+1/lib/src/widgets/settings_widgets.dart:3:8: Error: Error when reading '../../MobileDev/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_material_color_picker-1.1.0+2/lib/flutter_material_color_picker.dart': No such file or directory
  import 'package:flutter_material_color_picker/flutter_material_color_picker.dart';</p>
  </blockquote>
  <p>I tried:</p>
  <blockquote>
  <p>Deleting pubspec.lock</p>
  </blockquote>
  <blockquote>
  <p>flutter clean</p>
  </blockquote>