There are many reasons why you may want to do this. Sometimes you just want to make it easier for your customers. The less information you show the better 🙂
Some other times, you may have specific requirements. Well, hiding a Cart Table column is actually very easy – and despite this can be done with PHP I believe the CSS way is way faster. Here’s how it’s done!

CSS snippet: remove/hide one column from WooCommerce cart table
/* Change number 4 with number of column you want to remove */ .woocommerce table.cart td:nth-of-type(4), .woocommerce table.cart th:nth-of-type(4) { display: none; }