def delete_boot_script(self):
        """
        ::
        
            DELETE /:login/machines/:id/metadata/user-script
        
        Deletes any existing boot script on the machine.
        """
        j, r = self.datacenter.request('DELETE', self.path + 
                '/metadata/user-script')
        r.raise_for_status()
        self.boot_script = None
::
        
            DELETE /:login/machines/:id/metadata/user-script
        
        Deletes any existing boot script on the machine.