refactor: remove unused TestObjects.createCollectionInfoDto() method

Should be in 76894d6 commit.

Part of #1668

Author: php-coder

src/test/java/ru/mystamps/web/service/TestObjects.java

@@ -24,7 +24,6 @@
 import ru.mystamps.web.feature.account.UserDetails;
 import ru.mystamps.web.feature.account.UsersActivationDto;
 import ru.mystamps.web.feature.account.UsersActivationFullDto;
-import ru.mystamps.web.feature.collection.CollectionInfoDto;
 import ru.mystamps.web.feature.collection.SeriesInCollectionWithPriceDto;
 import ru.mystamps.web.feature.image.ImageDto;
 import ru.mystamps.web.feature.image.ImageInfoDto;
@@ -129,10 +128,6 @@ public static SeriesInfoDto createSeriesInfoDto() {
 		);
 	}
 
-	public static CollectionInfoDto createCollectionInfoDto() {
-		return new CollectionInfoDto(Random.id(), Random.collectionSlug(), "Test User");
-	}
-	
 	public static SeriesInCollectionWithPriceDto createSeriesInCollectionWithPriceDto() {
 		return new SeriesInCollectionWithPriceDto(
 			Random.id(),