delete empty tests form example

example/test/widget_test.dart

@@ -1,25 +0,0 @@
-// This is a basic Flutter widget test.
-// To perform an interaction with a widget in your test, use the WidgetTester utility that Flutter
-// provides. For example, you can send tap and scroll gestures. You can also use WidgetTester to
-// find child widgets in the widget tree, read text, and verify that the values of widget properties
-// are correct.
-
-import 'package:flutter/material.dart';
-import 'package:flutter_test/flutter_test.dart';
-
-import 'package:hello_example/main.dart';
-
-void main() {
-  testWidgets('Verify Platform version', (WidgetTester tester) async {
-    // Build our app and trigger a frame.
-    await tester.pumpWidget(new MyApp());
-
-    // Verify that platform version is retrieved.
-    expect(
-        find.byWidgetPredicate(
-          (Widget widget) =>
-              widget is Text && widget.data.startsWith('Running on:'),
-        ),
-        findsOneWidget);
-  });
-}