Snippet to hide category on WooCommerce Shop page

hide-category-on-shop.php

<?php

add_filter( 'get_terms', 'get_custom_category_terms', 10, 3 ); 
function get_custom_category_terms( $terms, $taxonomies, $args ) {
	$new_terms  = array();
	$hide_category = array( 217 ); // Ids of the category you don't want to display on the shop page

	if ( in_array( 'product_cat', $taxonomies ) && !is_admin() && is_shop() ) {
		foreach ( $terms as $key => $term ) {
			if ( ! in_array( $term->term_id, $hide_category ) ) { 
				$new_terms[] = $term;
			}
		}
		$terms = $new_terms;
	}
return $terms;
}

?>