Remove timeout waiting for app to start (#24336)

packages/flutter_tools/lib/src/commands/daemon.dart

@@ -429,12 +429,7 @@ class AppDomain extends Domain {
     final Completer<void> appStartedCompleter = Completer<void>();
     // We don't want to wait for this future to complete and callbacks won't fail.
     // As it just writes to stdout.
-    appStartedCompleter.future.timeout(const Duration(minutes: 3), onTimeout: () { // ignore: unawaited_futures
-      _sendAppEvent(app, 'log', <String, dynamic>{
-        'log': 'timeout waiting for the application to start',
-        'error': true,
-      });
-    }).then<void>((_) {
+    appStartedCompleter.future.then<void>((_) { // ignore: unawaited_futures
       _sendAppEvent(app, 'started');
     });