Remove custom taxonomy column from my custom post type columns

function wpse_80027_manage_columns($columns) {
    // remove taxonomy column
    unset($columns['taxonomy-YOUR_TAXONOMY_NAME']); // prepend taxonomy name with 'taxonomy-'
    // add your custom column
    $columns['CUSTOM_COLUMN_NAME'] = __('Column Name');
    return $columns;
}
add_filter('manage_edit-sp_product_columns', 'wpse_80027_manage_columns');


function wpse_80027_add_img_column($name) {
    if('CUSTOM_COLUMN_NAME' == $name) {
        // echo your image in 'CUSTOM_COLUMN_NAME' column
        echo '<img src="https://wordpress.stackexchange.com/questions/80027/image-name.png />";
    }
}
add_action('manage_sp_product_posts_custom_column', 'wpse_80027_add_img_column');