How to Hide the "BibleTagger" Admin Menu

function plt_hide_literal_word_bibletagger_menus() {
	//Hide the "Settings → BibleTagger" menu.
	remove_submenu_page('options-general.php', 'bibletagger');
}

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

Where do I put this code?