How to Hide WordPress Responsive CSS3 Pricing Tables Admin Menus

function plt_hide_wrc_pricing_tables_menus() {
	//Hide "Pricing Tables".
	remove_menu_page('wrc-pricing-tables/inc/admin-menu.php');
	//Hide "Pricing Tables → All Pricing Tables".
	remove_submenu_page('wrc-pricing-tables/inc/admin-menu.php', 'wrc-pricing-tables/inc/admin-menu.php');
	//Hide "Pricing Tables → Templates".
	remove_submenu_page('wrc-pricing-tables/inc/admin-menu.php', 'wrcpt_template');
	//Hide "Pricing Tables → Guide".
	remove_submenu_page('wrc-pricing-tables/inc/admin-menu.php', 'wrcpt_guide');
}

add_action('admin_menu', 'plt_hide_wrc_pricing_tables_menus', 11);

Where do I put this code?