How to Hide Captivate Sync™ Admin Menus

function plt_hide_captivatesync_trade_menus() {
	//Hide the "Captivate Sync" menu.
	remove_menu_page('cfm-hosting-podcasts');
	//Hide the "Captivate Sync → Captivate Sync" menu.
	remove_submenu_page('cfm-hosting-podcasts', 'cfm-hosting-podcasts');
	//Hide the "Captivate Sync → Authentication" menu.
	remove_submenu_page('cfm-hosting-podcasts', 'cfm-hosting-credentials');
}

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

Where do I put this code?