Remove "Product Type/Product Data" Dropdown Options - WooCommerce

function.php

add_filter( 'product_type_selector', 'remove_product_types' );

function remove_product_types( $types ){
    unset( $types['grouped'] );
    unset( $types['external'] );
    unset( $types['variable'] );

    return $types;
}

add_filter('product_type_selector', 'custom_product_type_selector');

function custom_product_type_selector($types) {
// Keep only 'simple' and 'variable' product types
$allowed_types = array(
'simple' => $types['simple'],
);

return $allowed_types;

}