To hide the shipping method follow the steps:

  1. Goto – \app\code\core\Mage\Checkout\Block\Onepage\Abstract.php
  2. find and replace the following code with this

  3.  
  4. then Goto  – \app\code\core\Mage\Checkout\controllers\OnepageController.php
  5. Find and replace the code with this

  6. all the commenting are magento default code, In this we only just hide the shipping method but working is same.
  7. after all these you check shipping method is hide. if any query please comment
  8. thanks