Remove smoke_catalina_hot_mode_dev_cycle__benchmark (#74006)

dev/devicelab/bin/tasks/smoke_catalina_hot_mode_dev_cycle__benchmark.dart

-// Copyright 2014 The Flutter Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-import 'package:flutter_devicelab/tasks/hot_mode_tests.dart';
-import 'package:flutter_devicelab/framework/framework.dart';
-
-Future<void> main() async {
-  await task(createHotModeTest());
-}

dev/devicelab/manifest.yaml

@@ -506,12 +506,6 @@ tasks:
     stage: devicelab
     required_agent_capabilities: ["mac-catalina/android"]
 
-  smoke_catalina_hot_mode_dev_cycle__benchmark:
-    description: >
-      A some test that runs on macOS Catalina, which is a clone of the Dart VM hot patching performance benchmarking.
-    stage: devicelab
-    required_agent_capabilities: ["mac-catalina/android"]
-
   # macOS target platform tests
   hot_mode_dev_cycle_macos_target__benchmark:
     description: >