removed redundant changes

The must-have method is auto generated

Author: Vasilii Burlacu

resources/fileTemplates/internal/Magento Observer Class.php.ft

@@ -10,13 +10,4 @@ use Magento\Framework\Event\ObserverInterface;
 use Magento\Framework\Event\Observer;
 
 class ${NAME} implements ObserverInterface {
-
-    /**
-     * @param Observer $observer
-     * @return void
-     */
-    public function execute(Observer $observer)
-    {
-
-    }
 }