CollectionService.isSeriesInCollection(): remove superfluous log message.

No functional changes.

Author: php-coder

src/main/java/ru/mystamps/web/service/CollectionServiceImpl.java

@@ -105,13 +105,6 @@ public boolean isSeriesInCollection(Integer userId, Integer seriesId) {
 
 		boolean isSeriesInCollection = collectionDao.isSeriesInUserCollection(userId, seriesId);
 
-		LOG.debug(
-			"Series #{} belongs to collection of user #{}: {}",
-			seriesId,
-			userId,
-			isSeriesInCollection
-		);
-		
 		return isSeriesInCollection;
 	}