Fixed App.dart

lib/src/App.dart

@@ -13,36 +13,4 @@ class App extends StatelessWidget {
       ),
     );
   }
-
-  Future<void> uploadPicture() async {
-    final imageTaken = await ImagePicker.pickImage(source: ImageSource.camera);
-    setState(() {
-      image = imageTaken;
-    });
-    task = provider.uploadFile(imageTaken);
-  }
-
-  Widget buildImage() {
-    if (image == null) {
-      return Text('No image yet');
-    }
-    return Image.file(image);
-  }
-
-  Widget buildFromTask() {
-    if (task == null) {
-      return Text('No task yet');
-    }
-    return StreamBuilder(
-      stream: task.events,
-      builder: (context, AsyncSnapshot<StorageTaskEvent> snapshot) {
-        if (!snapshot.hasData) {
-          return Text('No task yet');
-        } else if (task.isComplete) {
-          return Icon(Icons.check);
-        }
-        return CircularProgressIndicator();
-      },
-    );
-  }
 }