disable dart2js test (#28555)

dev/bots/test.dart

@@ -168,21 +168,22 @@ Future<void> _runBuildTests() async {
     await _flutterBuildApk(path);
     await _flutterBuildIpa(path);
   }
-  await _flutterBuildDart2js(path.join('dev', 'integration_tests', 'web'));
+  // TODO(jonahwilliams): re-enable when engine rolls.
+  //await _flutterBuildDart2js(path.join('dev', 'integration_tests', 'web'));
 
   print('${bold}DONE: All build tests successful.$reset');
 }
 
-Future<void> _flutterBuildDart2js(String relativePathToApplication) async {
-  print('Running Dart2JS build tests...');
-  await runCommand(flutter,
-    <String>['build', 'web', '-v'],
-    workingDirectory: path.join(flutterRoot, relativePathToApplication),
-    expectNonZeroExit: false,
-    timeout: _kShortTimeout,
-  );
-  print('Done.');
-}
+// Future<void> _flutterBuildDart2js(String relativePathToApplication) async {
+//   print('Running Dart2JS build tests...');
+//   await runCommand(flutter,
+//     <String>['build', 'web', '-v'],
+//     workingDirectory: path.join(flutterRoot, relativePathToApplication),
+//     expectNonZeroExit: false,
+//     timeout: _kShortTimeout,
+//   );
+//   print('Done.');
+// }
 
 Future<void> _flutterBuildAot(String relativePathToApplication) async {
   print('Running AOT build tests...');