Implemented the [deleteFile] method

lib/main.dart

@@ -2,6 +2,4 @@ import 'package:flutter/material.dart';
 
 import 'src/App.dart';
 
-main() async {
-  runApp(App());
-}
+main() => runApp(App());

lib/src/App.dart

@@ -1,20 +1,6 @@
-import 'dart:io';
 import 'package:flutter/material.dart';
-import 'package:image_picker/image_picker.dart';
-import 'package:firebase_auth/firebase_auth.dart';
-import './resources/google_sign_in_provider.dart';
-import 'package:firebase_storage/firebase_storage.dart';
-import './resources/firebase_storage_provider.dart';
-
-class App extends StatefulWidget {
-  AppState createState() => AppState();
-}
-
-class AppState extends State<App> {
-  File image;
-  FirebaseStorageProvider provider = FirebaseStorageProvider();
-  StorageUploadTask task;
 
+class App extends StatelessWidget {
   Widget build(BuildContext context) {
     return MaterialApp(
       title: 'Do more',
@@ -23,17 +9,7 @@ class AppState extends State<App> {
         appBar: AppBar(
           title: Text('DO>'),
         ),
-        body: Column(
-          children: <Widget>[
-            Text('Tasks'),
-            MaterialButton(
-              child: Text('Upload Picture'),
-              onPressed: uploadPicture,
-            ),
-            buildImage(),
-            buildFromTask(),
-          ],
-        ),
+        body: Text('Tasks'),
       ),
     );
   }

lib/src/resources/firebase_storage_provider.dart

@@ -28,4 +28,9 @@ class FirebaseStorageProvider {
         _storage.child('$folder/$fileId.$type');
     return fileReference.putFile(file);
   }
+
+  /// Deletes a file from the firebase storage bucket given its path.
+  Future<void> deleteFile(String path) {
+    return _storage.child(path).delete();
+  }
 }

lib/src/resources/firestore_provider.dart

@@ -1,3 +1,5 @@
+import 'dart:async';
+
 import 'package:cloud_firestore/cloud_firestore.dart';
 import 'package:rxdart/rxdart.dart';