test: remove tests for Timed* classes

The following issue won't be fixed:
Closes #800
Closes #805

Part of #1668

Author: php-coder

src/main/java/ru/mystamps/web/feature/series/TimedDownloaderService.java

@@ -27,7 +27,6 @@ public class TimedDownloaderService implements DownloaderService {
 	private final Logger log;
 	private final DownloaderService service;
 
-	// @todo #665 TimedDownloaderService: add unit tests
 	@Override
 	public DownloadResult download(String url) {
 		// Why we don't use Spring's StopWatch?

src/main/java/ru/mystamps/web/feature/series/importing/extractor/TimedSiteParser.java

@@ -22,7 +22,6 @@
 import org.apache.commons.lang3.time.StopWatch;
 import org.slf4j.Logger;
 
-// @todo #801 TimedSiteParser: add unit tests
 @RequiredArgsConstructor
 public class TimedSiteParser implements SiteParser {