How to Hide Landing Pages - PluginOps Landing Page Builder, Coming Soon Builder, Maintenance Mode Admin Menus

function plt_hide_page_builder_add_menus() {
	//Hide "Landing Pages By PluginOps".
	remove_menu_page('edit.php?post_type=ulpb_post');
	//Hide "Landing Pages By PluginOps → Landing Pages".
	remove_submenu_page('edit.php?post_type=ulpb_post', 'edit.php?post_type=ulpb_post');
	//Hide "Landing Pages By PluginOps → Add New Page".
	remove_submenu_page('edit.php?post_type=ulpb_post', 'post-new.php?post_type=ulpb_post');
	//Hide "Landing Pages By PluginOps → Categories".
	remove_submenu_page('edit.php?post_type=ulpb_post', 'edit-tags.php?taxonomy=category&post_type=ulpb_post');
	//Hide "Landing Pages By PluginOps → Tags".
	remove_submenu_page('edit.php?post_type=ulpb_post', 'edit-tags.php?taxonomy=post_tag&post_type=ulpb_post');
	//Hide "Landing Pages By PluginOps → Coming Soon Page".
	remove_submenu_page('edit.php?post_type=ulpb_post', 'page-builder-ulpb-comingsoon-settings');
	//Hide "Landing Pages By PluginOps → Form Submissions".
	remove_submenu_page('edit.php?post_type=ulpb_post', 'page-builder-ulpb-form-submissions');
	//Hide "Landing Pages By PluginOps → Tracking & Analytics".
	remove_submenu_page('edit.php?post_type=ulpb_post', 'page-builder-tracking-ulpb');
	//Hide "Landing Pages By PluginOps → Dashboard".
	remove_submenu_page('edit.php?post_type=ulpb_post', 'page-builder-dashboard-ulpb');
	//Hide "Landing Pages By PluginOps → Settings".
	remove_submenu_page('edit.php?post_type=ulpb_post', 'pluginops-settings');
	//Hide "Landing Pages By PluginOps → Blank Page".
	remove_submenu_page('edit.php?post_type=ulpb_post', 'page-builder-new-landing-page');
	//Hide "Landing Pages By PluginOps → Go Pro".
	remove_submenu_page('edit.php?post_type=ulpb_post', 'page-builder-extensions-ulpb');

	//Hide "PluginOps".
	remove_menu_page('pluginops');
	//Hide "PluginOps → PluginOps".
	remove_submenu_page('pluginops', 'pluginops');
	//Hide "PluginOps → Settings".
	remove_submenu_page('pluginops', 'pluginops-settings');
}

add_action('admin_menu', 'plt_hide_page_builder_add_menus', 11);
Where do I put this code?