remove unused test-utils.ts

src/utils/test-utils.ts

@@ -1,23 +0,0 @@
-import type { Config } from '../config.js';
-
-export const mockConfig: Config = {
-  file: {
-    maxFilenameLength: 100,
-    downloadsDir: '/mock/downloads',
-    tempDirPrefix: 'ytdlp-test-',
-    sanitize: {
-      replaceChar: '_',
-      truncateSuffix: '...',
-      illegalChars: /[<>:"/\\|?*\x00-\x1F]/g,
-      reservedNames: ['CON', 'PRN', 'AUX', 'NUL']
-    }
-  },
-  tools: {
-    required: ['yt-dlp']
-  },
-  download: {
-    defaultResolution: '720p',
-    defaultAudioFormat: 'm4a',
-    defaultSubtitleLanguage: 'en'
-  }
-};