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функция не описана

media_single_attachment_fields_to_edit() WP 2.5.0

Retrieves the single non-image attachment fields to edit form fields.

Хуков нет.

Возвращает

Массив. Filtered attachment form fields.

Использование

media_single_attachment_fields_to_edit( $form_fields, $post );
$form_fields(массив) (обязательный)
An array of attachment form fields.
$post(WP_Post) (обязательный)
The WP_Post attachment object.

Код media single attachment fields to edit: wp-admin/includes/media.php WP 5.2.2

<?php
function media_single_attachment_fields_to_edit( $form_fields, $post ) {
	unset( $form_fields['url'], $form_fields['align'], $form_fields['image-size'] );
	return $form_fields;
}