diff --git a/tests/functional/fixtures/ext/foo/test_captcha/captcha/test_captcha.php b/tests/functional/fixtures/ext/foo/test_captcha/captcha/test_captcha.php
deleted file mode 100644
index fb8c6ed090..0000000000
--- a/tests/functional/fixtures/ext/foo/test_captcha/captcha/test_captcha.php
+++ /dev/null
@@ -1,33 +0,0 @@
-<?php
-
-namespace foo\test_captcha\captcha;
-
-class test_captcha extends \phpbb\captcha\plugins\captcha_abstract
-{
-
-	function get_generator_class()
-	{
-	}
-
-	public function init($type)
-	{
-	}
-
-	public function execute_demo()
-	{
-	}
-
-	public function execute()
-	{
-	}
-
-	public function validate()
-	{
-		return true;
-	}
-
-	public function is_solved()
-	{
-		return true;
-	}
-}
\ No newline at end of file
diff --git a/tests/functional/fixtures/ext/foo/test_captcha/composer.json b/tests/functional/fixtures/ext/foo/test_captcha/composer.json
deleted file mode 100644
index 0ed4598df9..0000000000
--- a/tests/functional/fixtures/ext/foo/test_captcha/composer.json
+++ /dev/null
@@ -1,23 +0,0 @@
-{
-	"name": "foo/test_captcha",
-	"type": "phpbb-extension",
-	"description": "Testing extension for having a working captcha plugin",
-	"homepage": "",
-	"version": "1.0.0",
-	"time": "2024-03-24 01:01:01",
-	"license": "GPL-2.0",
-	"authors": [{
-		"name": "phpBB Limited",
-		"homepage": "https://www.phpbb.com",
-		"role": "Developer"
-	}],
-	"require": {
-		"php": ">=8.1"
-	},
-	"extra": {
-		"display-name": "phpBB 4.0 Test Captcha",
-		"soft-require": {
-			"phpbb/phpbb": "4.0.*@dev"
-		}
-	}
-}
diff --git a/tests/functional/fixtures/ext/foo/test_captcha/config/services.yml b/tests/functional/fixtures/ext/foo/test_captcha/config/services.yml
deleted file mode 100644
index 75cdf52270..0000000000
--- a/tests/functional/fixtures/ext/foo/test_captcha/config/services.yml
+++ /dev/null
@@ -1,5 +0,0 @@
-services:
-  foo_test_captcha.captcha.test_captcha:
-    class: foo\test_captcha\captcha\test_captcha
-    tags:
-      - { name: captcha.plugins }