reverted:
--- b/core/modules/help_topics/tests/modules/help_topics_test/bad_help_topics/discovery/bad_meta/expected_failure.topic.html.twig
+++ /dev/null
@@ -1 +0,0 @@
-<meta name="foo" content="something" />
reverted:
--- b/core/modules/help_topics/tests/modules/help_topics_test/bad_help_topics/discovery/no_label/expected_failure.topic.html.twig
+++ /dev/null
@@ -1 +0,0 @@
-<meta name="help_topic:top_level" content="" />
reverted:
--- b/core/modules/help_topics/tests/modules/help_topics_test/bad_help_topics/discovery/top_level/expected_failure.topic.html.twig
+++ /dev/null
@@ -1 +0,0 @@
-<meta name="help_topic:top_level" content="something" />
diff -u b/core/modules/help_topics/tests/src/Functional/HelpTopicsSyntaxTest.php b/core/modules/help_topics/tests/src/Functional/HelpTopicsSyntaxTest.php
--- b/core/modules/help_topics/tests/src/Functional/HelpTopicsSyntaxTest.php
+++ b/core/modules/help_topics/tests/src/Functional/HelpTopicsSyntaxTest.php
@@ -2,7 +2,6 @@
 
 namespace Drupal\Tests\help_topics\Functional;
 
-use Drupal\Component\Discovery\DiscoveryException;
 use Drupal\Tests\BrowserTestBase;
 use Drupal\help_topics\HelpTopicDiscovery;
 use PHPUnit\Framework\ExpectationFailedException;
@@ -80,44 +79,6 @@
     }
   }
 
-  /**
-   * Tests that help topic discovery fails in expected ways.
-   */
-  public function testDiscoveryExceptions() {
-    $base_bad_directory = \Drupal::service('extension.list.module')->getPath('help_topics_test') . '/bad_help_topics/discovery/';
-    $discovery_problems = [
-      [
-        'subdirectory' => 'provider',
-        'file' => 'test.topic.html.twig',
-        'message' => "file name should begin with 'expected_failure'",
-      ],
-      [
-        'subdirectory' => 'top_level',
-        'file' => 'expected_failure.topic.html.twig',
-        'message' => "contains invalid meta tag with name='help_topic:top_level', the 'content' property should not exist",
-      ],
-      [
-        'subdirectory' => 'bad_meta',
-        'file' => 'expected_failure.topic.html.twig',
-        'message' => "contains invalid meta tag with name='foo'",
-      ],
-      [
-        'subdirectory' => 'no_label',
-        'file' => 'expected_failure.topic.html.twig',
-        'message' => "does not contain the required meta tag with name='help_topic:label'",
-      ],
-    ];
-
-    foreach ($discovery_problems as $info) {
-      $fail_directories = [
-        'expected_failure' => $base_bad_directory . $info['subdirectory'],
-      ];
-      $this->expectException(DiscoveryException::class);
-      $this->expectExceptionMessage($fail_directories['expected_failure'] . '/' . $info['file'] . ' ' . $info['message']);
-      $this->discoverAllTopics($fail_directories);
-    }
-  }
-
   /**
    * Verifies rendering and standards compliance of one help topic.
    *