How to Hide Maintenance & Coming Soon Redirect Animation Admin Menus

function plt_hide_maintenance_coming_soon_redirect_animation_menus() {
	//Hide "Settings → Maintenance".
	remove_submenu_page('options-general.php', 'wploti-settings');

	//Hide "Maintenance".
	remove_menu_page('wploti-settings');
	//Hide "Maintenance → All settings".
	remove_submenu_page('wploti-settings', 'wploti-settings');
	//Hide "Maintenance → Header Type".
	remove_submenu_page('wploti-settings', 'wploti-settings#header');
	//Hide "Maintenance → Unrestricted IP addresses".
	remove_submenu_page('wploti-settings', 'wploti-settings#ip');
	//Hide "Maintenance → Access Keys".
	remove_submenu_page('wploti-settings', 'wploti-settings#keys');
	//Hide "Maintenance → Animation".
	remove_submenu_page('wploti-settings', 'wploti-settings#animation');
	//Hide "Maintenance → Message".
	remove_submenu_page('wploti-settings', 'wploti-settings#message');
	//Hide "Maintenance → Extra".
	remove_submenu_page('wploti-settings', 'wploti-settings#extra');
}

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

Where do I put this code?