Imbo\Database\Mongo::deleteMetadata PHP Method

    public function deleteMetadata($user, $imageIdentifier)
    {
        try {
            $data = $this->getImageCollection()->findOne(['user' => $user, 'imageIdentifier' => $imageIdentifier]);
            if ($data === null) {
                throw new DatabaseException('Image not found', 404);
            }
            $this->getImageCollection()->updateOne(['user' => $user, 'imageIdentifier' => $imageIdentifier], ['$set' => ['metadata' => []]]);
        } catch (MongoException $e) {
            throw new DatabaseException('Unable to delete meta data', 500, $e);
        }
        return true;
    }