after theme_setup...

function patricks_woocommerce_catalog_orderby( $orderby ) {
	unset($orderby["price"]);
	unset($orderby["price-desc"]);
	return $orderby;
}

function woo_archive_custom_cart_button_text() {
	return __( 'Check It Out', 'woocommerce' );
}

function woocoommerce_my_settings() {
	add_filter( 'woocommerce_catalog_orderby', 'patricks_woocommerce_catalog_orderby', 20 );
	add_filter( 'woocommerce_product_add_to_cart_text’, ‘woo_archive_custom_cart_button_text' );    // 2.1 +
}

add_action('after_setup_theme', 'woocoommerce_my_settings');