Disable flaky test case: "can call services and service extensions" (#8144)

diff --git a/packages/devtools_app/integration_test/test/live_connection/service_extensions_test.dart b/packages/devtools_app/integration_test/test/live_connection/service_extensions_test.dart
index d768874..6db9320 100644
--- a/packages/devtools_app/integration_test/test/live_connection/service_extensions_test.dart
+++ b/packages/devtools_app/integration_test/test/live_connection/service_extensions_test.dart
@@ -37,50 +37,44 @@
 
   testWidgets(
     'can call services and service extensions',
-    ignoreAllowedExceptions(
-      (tester) async {
-        await pumpAndConnectDevTools(tester, testApp);
-        await tester.pump(longDuration);
 
-        // TODO(kenz): re-work this integration test so that we do not have to be
-        // on the inspector screen for this to pass.
-        await switchToScreen(
-          tester,
-          tabIcon: ScreenMetaData.inspector.icon!,
-          screenId: ScreenMetaData.inspector.id,
-        );
-        await tester.pump(longDuration);
+    (tester) async {
+      await pumpAndConnectDevTools(tester, testApp);
+      await tester.pump(longDuration);
 
-        // Ensure all futures are completed before running checks.
-        await serviceConnection.serviceManager.service!.allFuturesCompleted;
+      // TODO(kenz): re-work this integration test so that we do not have to be
+      // on the inspector screen for this to pass.
+      await switchToScreen(
+        tester,
+        tabIcon: ScreenMetaData.inspector.icon!,
+        screenId: ScreenMetaData.inspector.id,
+      );
+      await tester.pump(longDuration);
 
-        logStatus('verify Flutter framework service extensions');
-        await _verifyBooleanExtension(tester);
-        await _verifyNumericExtension(tester);
-        await _verifyStringExtension(tester);
+      // Ensure all futures are completed before running checks.
+      await serviceConnection.serviceManager.service!.allFuturesCompleted;
 
-        logStatus('verify Flutter engine service extensions');
-        expect(
-          await serviceConnection.queryDisplayRefreshRate,
-          equals(60),
-        );
+      logStatus('verify Flutter framework service extensions');
+      await _verifyBooleanExtension(tester);
+      await _verifyNumericExtension(tester);
+      await _verifyStringExtension(tester);
 
-        logStatus('verify services that are registered to exactly one client');
-        await _verifyHotReloadAndHotRestart();
-        await expectLater(
-          serviceConnection.serviceManager.callService('fakeMethod'),
-          throwsException,
-        );
+      logStatus('verify Flutter engine service extensions');
+      expect(
+        await serviceConnection.queryDisplayRefreshRate,
+        equals(60),
+      );
 
-        await disconnectFromTestApp(tester);
-      },
-      allowedExceptions: [
-        AllowedException(
-          msg: 'A SemanticsHandle was active at the end of the test.',
-          issue: 'https://github.com/flutter/devtools/issues/8107',
-        ),
-      ],
-    ),
+      logStatus('verify services that are registered to exactly one client');
+      await _verifyHotReloadAndHotRestart();
+      await expectLater(
+        serviceConnection.serviceManager.callService('fakeMethod'),
+        throwsException,
+      );
+
+      await disconnectFromTestApp(tester);
+    },
+    skip: true, // https://github.com/flutter/devtools/issues/8107
   );
 
   testWidgets('loads initial extension states from device', (tester) async {
diff --git a/packages/devtools_test/lib/src/integration_test/integration_test_utils.dart b/packages/devtools_test/lib/src/integration_test/integration_test_utils.dart
index cb5e85d..945d3d8 100644
--- a/packages/devtools_test/lib/src/integration_test/integration_test_utils.dart
+++ b/packages/devtools_test/lib/src/integration_test/integration_test_utils.dart
@@ -2,11 +2,9 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-import 'dart:async';
 import 'dart:convert';
 import 'dart:ui' as ui;
 
-import 'package:collection/collection.dart';
 import 'package:devtools_app/devtools_app.dart';
 import 'package:devtools_app/main.dart' as app;
 import 'package:devtools_app_shared/ui.dart';
@@ -159,37 +157,3 @@
     },
   );
 }
-
-class AllowedException {
-  AllowedException({required this.msg, required this.issue});
-
-  final String msg;
-  final String issue;
-}
-
-/// Wraps the callback to [testWidgets] in a new zone that will catch any
-/// exceptions thrown during the test or after the test completes.
-///
-/// If the exception is included in [allowedExceptions], the exception will be
-/// logged but ignored. Otherwise, the exception will be rethrown.
-Future<void> Function(WidgetTester) ignoreAllowedExceptions(
-  Future<void> Function(WidgetTester) testCallback, {
-  required List<AllowedException> allowedExceptions,
-}) {
-  return (WidgetTester tester) async {
-    await runZonedGuarded(
-      () async {
-        await testCallback(tester);
-      },
-      (e, st) {
-        final allowed = allowedExceptions
-            .firstWhereOrNull((allowed) => '$e'.contains(allowed.msg));
-        if (allowed == null) {
-          throw Error.throwWithStackTrace(e, st);
-        } else {
-          logStatus('Ignoring exception due to ${allowed.issue}: $e');
-        }
-      },
-    );
-  };
-}