You can forget a translation for a specific field using the forgetTranslation
function:
public function forgetTranslation(string $attributeName, string $locale)
Here's an example:
$newsItem->forgetTranslation('name', 'nl');
You can forget all translations for a specific locale:
public function forgetAllTranslations(string $locale)
Here's an example:
$newsItem->forgetAllTranslations('nl');