How to Hide the "Adsense for AMP" Admin Menu

function plt_hide_setup_adsense_for_amp_menus() {
	//Hide the "Adsense for AMP" menu.
	remove_menu_page('setup-adsense-for-amp');
}

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

Where do I put this code?