Sulu\Bundle\MediaBundle\Media\FormatOptions\FormatOptionsManager::delete PHP Method

    public function delete($mediaId, $formatKey)
    {
        if (!isset($this->formats[$formatKey])) {
            throw new FormatNotFoundException($formatKey);
        }
        $media = $this->mediaManager->getEntityById($mediaId);
        $fileVersion = $this->getFileVersionForMedia($media);
        $formatOptions = $fileVersion->getFormatOptions()->get($formatKey);
        if (isset($formatOptions)) {
            $fileVersion->getFormatOptions()->remove($formatKey);
            $fileVersion->increaseSubVersion();
            $this->em->remove($formatOptions);
            $this->em->persist($fileVersion);
            $this->purgeMedia($mediaId, $fileVersion);
        }
    }