How to Hide Popper Admin Menus

function plt_hide_popper_menus() {
	//Hide "Logs".
	remove_menu_page('edit.php?post_type=popper_log');
	//Hide "Logs → Logs".
	remove_submenu_page('edit.php?post_type=popper_log', 'edit.php?post_type=popper_log');
	//Hide "Logs → Add New Post".
	remove_submenu_page('edit.php?post_type=popper_log', 'post-new.php?post_type=popper_log');
	//Hide "Logs → Tags".
	remove_submenu_page('edit.php?post_type=popper_log', 'edit-tags.php?taxonomy=popper_log_type&post_type=popper_log');

	//Hide "Popups".
	remove_menu_page('popper');
	//Hide "Popups → Popups".
	remove_submenu_page('popper', 'popper');
	//Hide "Popups → Settings".
	remove_submenu_page('popper', 'popper-settings');
	//Hide "Popups → Analytics".
	remove_submenu_page('popper', 'popper-analytics');
}

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

Where do I put this code?