cleanup code

lib/pages/processing/model/processing_model.dart

@@ -1,8 +1,6 @@
 import 'dart:async';
-import 'dart:io';
 
 import 'package:cloud_firestore/cloud_firestore.dart';
-import 'package:fcs/domain/entities/package.dart';
 import 'package:fcs/domain/entities/processing.dart';
 import 'package:fcs/pages/main/model/base_model.dart';
 import 'package:logging/logging.dart';

lib/pages/processing/package_editor.dart

@@ -9,7 +9,6 @@ import 'package:fcs/pages/package/model/package_model.dart';
 import 'package:fcs/pages/package/tracking_id_page.dart';
 import 'package:fcs/pages/main/util.dart';
 import 'package:fcs/pages/package_search/package_serach.dart';
-import 'package:fcs/pages/widgets/barcode_scanner.dart';
 import 'package:fcs/pages/widgets/display_text.dart';
 import 'package:fcs/pages/widgets/input_text.dart';
 import 'package:fcs/pages/widgets/local_text.dart';
@@ -19,7 +18,6 @@ import 'package:fcs/pages/widgets/progress.dart';
 import 'package:flutter/cupertino.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter_vector_icons/flutter_vector_icons.dart';
-import 'package:permission_handler/permission_handler.dart';
 import 'package:provider/provider.dart';
 
 class PackageEditor extends StatefulWidget {

lib/pages/processing/processing_editor.dart

@@ -257,12 +257,6 @@ class _ProcesingEditorState extends State<ProcesingEditor> {
     setState(() {});
   }
 
-  _removePackage(Package package) {
-    if (package == null) return;
-    this.packages.removeWhere((p) => p.trackingID == package.trackingID);
-    setState(() {});
-  }
-
   _save() async {
     setState(() {
       _isLoading = true;