woocommerce - Remove Stock message from Product

functions.php

function my_wc_hide_in_stock_message( $html, $product ) {
	if ( $product->is_in_stock() ) {
		return '';
	}

	return $html;
}

add_filter( 'woocommerce_get_stock_html', 'my_wc_hide_in_stock_message', 10, 2 );