Magneto - Programmatically remove Customer Attribute via file php in the root directory

removeattribute.php

<!-- PUT THIS CODE IN ONE PHP FILE IN THE ROOT DIRECTORY -->
<?php
error_reporting(E_ALL | E_STRICT);
include 'app/Mage.php';
Mage::app();
Mage::setIsDeveloperMode(true);
umask(0);

$attributeCode = "barrio";  //Put here your attribute code

// get all attribute
$attribute   = Mage::getSingleton("eav/config")->getAttribute("customer_address", $attributeCode);

// get TypeId for that kind of attribute
$entityTypeId = Mage::getModel('eav/entity')->setType('customer_address')->getTypeId();

try {
	$setup = Mage::getModel('customer/entity_setup', 'core_setup');
	$setup->removeAttribute($entityTypeId, $attributeCode);
	echo "Deleted!";
}
catch (Mage_Core_Exception $e) {
	print_r($e->getMessage());
}