How to Hide Easy Architect Admin Menus

function plt_hide_easy_architect_menus() {
	//Hide the "Posts → Meta" menu.
	remove_submenu_page('edit.php', 'eaar_post_meta_menu');

	//Hide the "Settings → Post Type" menu.
	remove_submenu_page('options-general.php', 'eaar_post_type_menu');
	//Hide the "Settings → Edit Post Type" menu.
	remove_submenu_page('options-general.php', 'eaar_post_type_edit');
}

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

Where do I put this code?