cleanup changes

Author: d3xvn

video_calling_tutorial/test/widget_test.dart

@@ -5,9 +5,4 @@
 // 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:video_calling_tutorial/main.dart';
-
 void main() {}