Remove StreamSubscriptions

test/util/load_app_fonts/app_font_test.dart

@@ -1,8 +1,5 @@
-import 'dart:async';
-import 'dart:convert';
 import 'dart:io';
 
-import 'package:flutter/rendering.dart';
 import 'package:flutter_test/flutter_test.dart';
 
 import 'utils.dart';
@@ -11,8 +8,6 @@ void main() {
   test('When defined in pubspec a third-party font is loaded', () async {
     int exitCode = -1;
     late Directory tempDir;
-    late StreamSubscription s1;
-    late StreamSubscription s2;
     try {
       // Copy virtual/montserrat to test folder
       tempDir = Directory.systemTemp.createTempSync('app_font_test');
@@ -37,19 +32,11 @@ void main() {
       );
 
       exitCode = await test.exitCode;
-      s1 = test.stdout.transform(utf8.decoder).listen((event) {
-        debugPrint(event);
-      });
-      s2 = test.stderr.transform(utf8.decoder).listen((event) {
-        throw Exception(event);
-      });
     } catch (e) {
       rethrow;
     } finally {
       expect(exitCode, equals(0));
       tempDir.deleteSync(recursive: true);
-      s1.cancel();
-      s2.cancel();
     }
   });
 }