diff --git a/core/tests/Drupal/Tests/Composer/Plugin/Scaffold/Functional/ComposerHookTest.php b/core/tests/Drupal/Tests/Composer/Plugin/Scaffold/Functional/ComposerHookTest.php
index 1bc89295b481..9c755941da4e 100644
--- a/core/tests/Drupal/Tests/Composer/Plugin/Scaffold/Functional/ComposerHookTest.php
+++ b/core/tests/Drupal/Tests/Composer/Plugin/Scaffold/Functional/ComposerHookTest.php
@@ -115,16 +115,6 @@ class ComposerHookTest extends BuildTestBase {
     $this->assertDirectoryExists($sut);
     $this->assertStringContainsString('Scaffolding files for fixtures/drupal-drupal', $stdout);
     $this->assertScaffoldedFile($sut . '/index.php', FALSE, 'Test version of index.php from drupal/core');
-    $topLevelProjectDir = 'composer-hooks-nothing-allowed-fixture';
-    $sut = $this->fixturesDir . '/' . $topLevelProjectDir;
-    // Run composer install on an empty project.
-    $this->mustExec("composer install --no-ansi", $sut);
-    // Require a project that is not allowed to scaffold and confirm that we
-    // get a warning, and it does not scaffold.
-    $this->executeCommand("composer require --no-ansi --no-interaction fixtures/drupal-assets-fixture:dev-main fixtures/scaffold-override-fixture:dev-main", $sut);
-    $this->assertCommandSuccessful();
-    $this->assertFileDoesNotExist($sut . '/sites/default/default.settings.php');
-    $this->assertErrorOutputContains('See https://getcomposer.org/allow-plugins');
   }
 
   /**
diff --git a/core/tests/Drupal/Tests/Composer/Plugin/Scaffold/fixtures/composer-hooks-nothing-allowed-fixture/assets/robots-default.txt b/core/tests/Drupal/Tests/Composer/Plugin/Scaffold/fixtures/composer-hooks-nothing-allowed-fixture/assets/robots-default.txt
deleted file mode 100644
index a26bf8912fb8..000000000000
--- a/core/tests/Drupal/Tests/Composer/Plugin/Scaffold/fixtures/composer-hooks-nothing-allowed-fixture/assets/robots-default.txt
+++ /dev/null
@@ -1 +0,0 @@
-# robots.txt fixture scaffolded from "file-mappings" in composer-hooks-fixture composer.json fixture.
diff --git a/core/tests/Drupal/Tests/Composer/Plugin/Scaffold/fixtures/composer-hooks-nothing-allowed-fixture/composer.json.tmpl b/core/tests/Drupal/Tests/Composer/Plugin/Scaffold/fixtures/composer-hooks-nothing-allowed-fixture/composer.json.tmpl
deleted file mode 100644
index 33393c3f59cc..000000000000
--- a/core/tests/Drupal/Tests/Composer/Plugin/Scaffold/fixtures/composer-hooks-nothing-allowed-fixture/composer.json.tmpl
+++ /dev/null
@@ -1,64 +0,0 @@
-{
-  "name": "fixtures/drupal-drupal",
-  "type": "project",
-  "minimum-stability": "dev",
-  "prefer-stable": true,
-  "repositories": {
-    "packagist.org": false,
-    "composer-scaffold": {
-      "type": "path",
-      "url": "__PROJECT_ROOT__",
-      "options": {
-        "symlink": true
-      }
-    },
-    "drupal-core-fixture": {
-      "type": "path",
-      "url": "../drupal-core-fixture",
-      "options": {
-        "symlink": true
-      }
-    },
-    "drupal-assets-fixture": {
-      "type": "path",
-      "url": "../drupal-assets-fixture",
-      "options": {
-        "symlink": true
-      }
-    },
-    "scaffold-override-fixture": {
-      "type": "path",
-      "url": "../scaffold-override-fixture",
-      "options": {
-        "symlink": true
-      }
-    }
-  },
-  "require": {
-    "drupal/core-composer-scaffold": "*",
-    "fixtures/drupal-core-fixture": "*"
-  },
-  "extra": {
-    "drupal-scaffold": {
-      "locations": {
-        "web-root": "./"
-      },
-      "symlink": __SYMLINK__,
-      "file-mapping": {
-        "[web-root]/.htaccess": false,
-        "[web-root]/robots.txt": "assets/robots-default.txt"
-      }
-    },
-    "installer-paths": {
-      "core": ["type:drupal-core"],
-      "modules/contrib/{$name}": ["type:drupal-module"],
-      "modules/custom/{$name}": ["type:drupal-custom-module"],
-      "profiles/contrib/{$name}": ["type:drupal-profile"],
-      "profiles/custom/{$name}": ["type:drupal-custom-profile"],
-      "themes/contrib/{$name}": ["type:drupal-theme"],
-      "themes/custom/{$name}": ["type:drupal-custom-theme"],
-      "libraries/{$name}": ["type:drupal-library"],
-      "drush/Commands/contrib/{$name}": ["type:drupal-drush"]
-    }
-  }
-}