To hide or remove the "Subtotal" text and the corresponding amount, you can use the following CSS code (insert it in your Child's theme):

/* Hide the subtotal row in the cart */
.woocommerce-cart-form .product-subtotal {
    display: none !important;
}

/* Hide the "Subtotal" header in the table */
.shop_table th.product-subtotal {
    display: none !important;
}

/* Hide the subtotal column content */
.shop_table td.product-subtotal {
    display: none !important;
}

• .woocommerce-cart-form .product-subtotal: Targets all subtotal cells (data and headers) to ensure they are hidden.
• .shop_table th.product-subtotal: Specifically hides the "Subtotal" header in the table.
• .shop_table td.product-subtotal: Hides the subtotal values in the table rows.