How to Hide Gutenverse News Admin Menus

function plt_hide_gutenverse_news_menus() {
	//Hide "Appearance → Gutenverse Themes".
	remove_submenu_page('themes.php', 'admin.php?page=gutenverse&path=theme-list');

	//Hide "Gutenverse".
	remove_menu_page('gutenverse');
	//Hide "Gutenverse → Dashboard".
	remove_submenu_page('gutenverse', 'gutenverse');
	//Hide "Gutenverse → Ecosystem".
	remove_submenu_page('gutenverse', 'http://127.0.0.1/wp-admin/admin.php?page=gutenverse&path=ecosystem');
	//Hide "Gutenverse → Theme List".
	remove_submenu_page('gutenverse', 'http://127.0.0.1/wp-admin/admin.php?page=gutenverse&path=theme-list');
	//Hide "Gutenverse → Blocks".
	remove_submenu_page('gutenverse', 'http://127.0.0.1/wp-admin/admin.php?page=gutenverse&path=block-list');
	//Hide "Gutenverse → Settings".
	remove_submenu_page('gutenverse', 'http://127.0.0.1/wp-admin/admin.php?page=gutenverse&path=settings');
	//Hide "Gutenverse → System Status".
	remove_submenu_page('gutenverse', 'http://127.0.0.1/wp-admin/admin.php?page=gutenverse&path=system');
	//Hide "Gutenverse → Update Notice".
	remove_submenu_page('gutenverse', 'http://127.0.0.1/wp-admin/admin.php?page=gutenverse&path=update-notice&version=');
	//Hide "Gutenverse → Upgrade to PRO".
	remove_submenu_page('gutenverse', 'https://gutenverse.com/pro/?utm_source=gutenverse&utm_medium=dashboardnav');
}

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