add_filter( 'frm_pro_fields_in_summary_values', 'exclude_field_from_summary', 10, 2 );
function exclude_field_from_summary( $fields, $args ) {
	$target_form_id = 302; // Replace 302 with ID of your form
	if ( $target_form_id !== (int) $args['form_id'] ) {
		return $fields;
	}
	$field_id_to_remove = 1460; // Replace 1460 with ID of your field
	foreach ( $fields as $key => $field ) {
		if ( (int) $field->id === $field_id_to_remove ) {
			unset( $fields[ $key ] );
			return $fields;
		}
	}
	return $fields;
}