refactor: transport agnostic examples (#131)

examples/http-discovery-userprofile/UserIdCompletionProvider.php

@@ -1,24 +0,0 @@
-<?php
-
-/*
- * This file is part of the official PHP MCP SDK.
- *
- * A collaboration between Symfony and the PHP Foundation.
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-namespace Mcp\Example\HttpDiscoveryUserProfile;
-
-use Mcp\Capability\Completion\ProviderInterface;
-
-final class UserIdCompletionProvider implements ProviderInterface
-{
-    private const AVAILABLE_USER_IDS = ['101', '102', '103'];
-
-    public function getCompletions(string $currentValue): array
-    {
-        return array_filter(self::AVAILABLE_USER_IDS, fn (string $userId) => str_contains($userId, $currentValue));
-    }
-}