Revert "Fix benchmark (#81449)" (#81696)

This reverts commit a3893aea.

dev/benchmarks/macrobenchmarks/test_driver/animated_image_test.dart

@@ -6,7 +6,7 @@ import 'package:flutter_driver/flutter_driver.dart';
 import 'package:test/test.dart' hide TypeMatcher, isInstanceOf;
 
 Future<void> main() async {
-  const String fileName = 'animated_image';
+  const String fileName = 'large_image_changer';
 
   test('Animate for 250 frames', () async {
     final FlutterDriver driver = await FlutterDriver.connect();

dev/devicelab/bin/tasks/animated_image_gc_perf.dart

@@ -9,11 +9,8 @@ import 'package:flutter_devicelab/tasks/perf_tests.dart';
 
 Future<void> main() async {
   deviceOperatingSystem = DeviceOperatingSystem.android;
-  await task(PerfTest(
+  await task(DevToolsMemoryTest(
     '${flutterDirectory.path}/dev/benchmarks/macrobenchmarks',
     'test_driver/animated_image.dart',
-    'animated_image',
-    measureCpuGpu: true,
-    measureMemory: true,
   ).run);
 }

dev/devicelab/lib/tasks/perf_tests.dart

@@ -777,8 +777,6 @@ const List<String> _kCommonScoreKeys = <String>[
   'worst_frame_rasterizer_time_millis',
   '90th_percentile_frame_rasterizer_time_millis',
   '99th_percentile_frame_rasterizer_time_millis',
-  'new_gen_gc_count',
-  'old_gen_gc_count',
 ];
 
 class PerfTestWithSkSL extends PerfTest {