How to Hide ICustomizer Admin Menus

function plt_hide_icustomizer_menus() {
	//Hide "ICUSTOMIZER".
	remove_menu_page('icustomizer');
	//Hide "ICUSTOMIZER → ICUSTOMIZER".
	remove_submenu_page('icustomizer', 'icustomizer');
	//Hide "ICUSTOMIZER → General Options".
	remove_submenu_page('icustomizer', 'icustomizer-general');
	//Hide "ICUSTOMIZER → Dashboard Options".
	remove_submenu_page('icustomizer', 'icustomizer-dashboard');
	//Hide "ICUSTOMIZER → Custom CSS Site".
	remove_submenu_page('icustomizer', 'icustomizer-customcsssite');
	//Hide "ICUSTOMIZER → Custom CSS Backend".
	remove_submenu_page('icustomizer', 'icustomizer-customcssbackend');
	//Hide "ICUSTOMIZER → Custom JS Options".
	remove_submenu_page('icustomizer', 'icustomizer-customjs');
	//Hide "ICUSTOMIZER → Editor Options".
	remove_submenu_page('icustomizer', 'icustomizer-editor');
	//Hide "ICUSTOMIZER → Login Options".
	remove_submenu_page('icustomizer', 'icustomizer-login');
	//Hide "ICUSTOMIZER → Security Options".
	remove_submenu_page('icustomizer', 'icustomizer-security');
	//Hide "ICUSTOMIZER → Credits".
	remove_submenu_page('icustomizer', 'icustomizer-credits');
}

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

Where do I put this code?