how to hide parts of add to cart button in woocommerce code example

Example 1: remove add to cart woocommerce button

function chiefthemes_remove_addcart() {
   $product = get_product();
   if ( has_term ( 'category-name', 'product_cat') ) {
       remove_action( 'woocommerce_after_shop_loop_item', 'woocommerce_template_loop_add_to_cart' );
       remove_action( 'woocommerce_single_product_summary', 'woocommerce_template_single_add_to_cart', 30 );
       remove_action( 'woocommerce_simple_add_to_cart', 'woocommerce_simple_add_to_cart', 30 );
       remove_action( 'woocommerce_grouped_add_to_cart', 'woocommerce_grouped_add_to_cart', 30 );
       remove_action( 'woocommerce_variable_add_to_cart', 'woocommerce_variable_add_to_cart', 30 );
       remove_action( 'woocommerce_external_add_to_cart', 'woocommerce_external_add_to_cart', 30 );
   }
}
add_action( 'wp', 'chiefthemes_remove_addcart' );

Example 2: remove add to cart woocommerce button

remove_action( 'woocommerce_single_product_summary', 'woocommerce_template_single_add_to_cart');