Magento delete categories progamatically

categoryDelete.php

 <?php
  public function deleteAction(){
   // not a good practice
    Mage::register("isSecureArea", 1);
    
    //load all categories
    $categories = Mage::getModel('catalog/category')
      ->getCollection()
      ->addAttributeToSelect('*')
      ->addIsActiveFilter();
      
    foreach($categories as $category){
      if($category->getName() == 'Cal'){
        $category->delete();
      }
    }
  }
  ?>