<?php

add_filter( 'woocommerce_product_get_rating_html', 'ast_remove_zero_rating', 11, 3 );

// Hiding zero review starts from shop page products.
function ast_remove_zero_rating( $html, $rating, $count ) {

	if( 0 === $rating && is_shop() ) {
		return '';
	}

	return $html;
}