创建商品，图片url加上尺寸

ch-core/src/main/java/com/wwdz/ch/core/storage/StorageService.java

@@ -58,7 +58,6 @@ public class StorageService {
 	 *            文件索引名
 	 */
 	public String store(InputStream inputStream, long contentLength, String contentType, String fileName) {
-		String key = generateKey(fileName);
 		BufferedImage bufferedImage = null;
 		try {
 			bufferedImage = ImageIO.read(inputStream);