How to Hide Bulk Delete Admin Menus

function plt_hide_bulk_delete_menus() {
	//Hide "Bulk WP".
	remove_menu_page('bulk-delete-posts');
	//Hide "Bulk WP → Bulk Delete Posts".
	remove_submenu_page('bulk-delete-posts', 'bulk-delete-posts');
	//Hide "Bulk WP → Bulk Delete Pages".
	remove_submenu_page('bulk-delete-posts', 'bulk-delete-pages');
	//Hide "Bulk WP → Bulk Delete Users".
	remove_submenu_page('bulk-delete-posts', 'bulk-delete-users');
	//Hide "Bulk WP → Bulk Delete Meta Fields".
	remove_submenu_page('bulk-delete-posts', 'bulk-delete-metas');
	//Hide "Bulk WP → Bulk Delete Terms".
	remove_submenu_page('bulk-delete-posts', 'bulk-delete-terms');
	//Hide "Bulk WP → Bulk Delete Misc".
	remove_submenu_page('bulk-delete-posts', 'bulk-delete-misc');
	//Hide "Bulk WP → Scheduled Jobs".
	remove_submenu_page('bulk-delete-posts', 'bulk-delete-cron');
	//Hide "Bulk WP → System Info".
	remove_submenu_page('bulk-delete-posts', 'bulk-delete-system-info');
	//Hide "Bulk WP → Addon Licenses".
	remove_submenu_page('bulk-delete-posts', 'bulk-delete-addon');
}

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

Where do I put this code?