Remove unused imports

Author: eightgran

lib/src/screens/application_licenses_screen.dart

@@ -1,4 +1,3 @@
-import 'package:flutter/foundation.dart';
 import 'package:flutter/material.dart';
 import 'package:leitmotif/leitmotif.dart';
 

lib/src/widgets/collapsible_card_controller.dart

@@ -1,4 +1,3 @@
-import 'package:flutter/animation.dart';
 import 'package:flutter/widgets.dart';
 
 class CollapsibleCardController {

lib/src/widgets/lit_divider.dart

@@ -1,8 +1,7 @@
 import 'package:flutter/material.dart';
 import 'package:leitmotif/leitmotif.dart';
 
-//TODO: Move to `art`
-/// A Flutter `art` widget displaying a colored divider to seperate
+/// A Leitmotif `widget` displaying a colored divider to seperate
 ///  similar-looking widgets.
 class LitDivider extends StatelessWidget {
   /// The divider's thickness.

lib/src/widgets/lit_notification_container.dart

@@ -1,6 +1,5 @@
 import 'package:flutter/material.dart';
 import 'package:leitmotif/leitmotif.dart';
-import 'package:leitmotif/src/controller/lit_notification_controller.dart';
 
 /// A widget to show multiple notifications on top of the provided [child].
 ///

lib/src/widgets/lit_snackbar_controller.dart

@@ -1,4 +1,3 @@
-import 'package:flutter/animation.dart';
 import 'package:flutter/material.dart';
 import 'package:leitmotif/leitmotif.dart';
 

lib/src/widgets/lit_transform_animated_button.dart

@@ -1,4 +1,3 @@
-import 'dart:ui';
 import 'package:flutter/material.dart';
 import 'package:leitmotif/leitmotif.dart';