How to Hide WP Inventory Admin Menus

function plt_hide_wp_inventory_manager_menus() {
	//Hide "WP Inventory".
	remove_menu_page('wpinventory');
	//Hide "WP Inventory → Status".
	remove_submenu_page('wpinventory', 'wpinventory');
	//Hide "WP Inventory → Inventory Items".
	remove_submenu_page('wpinventory', 'wpim_manage_inventory_items');
	//Hide "WP Inventory → Categories".
	remove_submenu_page('wpinventory', 'wpim_manage_categories');
	//Hide "WP Inventory → Labels".
	remove_submenu_page('wpinventory', 'wpim_manage_labels');
	//Hide "WP Inventory → Display".
	remove_submenu_page('wpinventory', 'wpim_manage_display');
	//Hide "WP Inventory → Statuses".
	remove_submenu_page('wpinventory', 'wpim_manage_statuses');
	//Hide "WP Inventory → Import / Export".
	remove_submenu_page('wpinventory', 'wpim_promote_ie');
	//Hide "WP Inventory → Advanced Management".
	remove_submenu_page('wpinventory', 'wpim_promote_aim');
	//Hide "WP Inventory → Locations Manager".
	remove_submenu_page('wpinventory', 'wpim_promote_locations');
	//Hide "WP Inventory → Add Ons".
	remove_submenu_page('wpinventory', 'wpim_manage_add_ons');
	//Hide "WP Inventory → Settings".
	remove_submenu_page('wpinventory', 'wpim_manage_settings');
	//Hide "WP Inventory → Support".
	remove_submenu_page('wpinventory', 'wpim_manage_support');
}

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

Where do I put this code?