Argon

Does anyone know how to remove the prices on products from google search results? I've hidden the price on the productpages using css (.product-price{ display: none !important;) but that does not hide the price on Google search results as Google shows the meta property of the product page (<meta property="product:price:amount" content="0.00"/>). So, how do I hide or change this: <meta property="product:price:amount" content="0.00"/> ?