When I am running update.php, I am getting warning message. I am sure this is showing because the module was deleted without uninstalling. I am unable to find the Pantheon module or the module for which this warning is related.
User warning: The following module is missing from the file system: pantheon. For information about how to fix this, see the documentation page. in
_drupal_trigger_error_with_delayed_logging()(line 1143 of /homepages/46/d644118784/htdocs/includes/bootstrap.inc).