Clean code

youtube/src/main/java/com/github/kiulian/downloader/YoutubeDownloader.java

@@ -14,8 +14,6 @@ import okhttp3.OkHttpClient;
 
 public class YoutubeDownloader {
 
-    private final Downloader downloader;
-    private final Config config;
     private final Parser parser;
 
     public YoutubeDownloader(OkHttpClient client) {
@@ -23,14 +21,10 @@ public class YoutubeDownloader {
     }
 
     public YoutubeDownloader(Config config, OkHttpClient client) {
-        this.downloader = new DownloaderImpl(this.config = config, client);
+        Downloader downloader = new DownloaderImpl(config, client);
         this.parser = new ParserImpl(config, downloader, new ExtractorImpl(downloader), new CachedCipherFactory(downloader));
     }
 
-    public Config getConfig() {
-        return config;
-    }
-
     public Response<VideoInfo> getVideoInfo(RequestVideoInfo request) {
         return parser.parseVideo(request);
     }