How to Hide Sakurato Crypto Portfolio Tracker Admin Menus

function plt_hide_sakurato_crypto_portfolio_tracker_menus() {
	//Hide "Crypto Portfolio".
	remove_menu_page('crypto-portfolio-dashboard');
	//Hide "Crypto Portfolio → Dashboard".
	remove_submenu_page('crypto-portfolio-dashboard', 'crypto-portfolio-dashboard');
	//Hide "Crypto Portfolio → Transaction Management".
	remove_submenu_page('crypto-portfolio-dashboard', 'crypto-portfolio-transactions');
	//Hide "Crypto Portfolio → Snapshot Management".
	remove_submenu_page('crypto-portfolio-dashboard', 'crypto_portfolio_snapshots_management');
	//Hide "Crypto Portfolio → Shortcodes".
	remove_submenu_page('crypto-portfolio-dashboard', 'crypto_portfolio_shortcodes');
	//Hide "Crypto Portfolio → Import/Export".
	remove_submenu_page('crypto-portfolio-dashboard', 'crypto-portfolio-import-export');
	//Hide "Crypto Portfolio → API Settings".
	remove_submenu_page('crypto-portfolio-dashboard', 'sakurato_cpt_api_settings');
	//Hide "Crypto Portfolio → About".
	remove_submenu_page('crypto-portfolio-dashboard', 'sakurato-cpt-about');
}

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

Where do I put this code?