Only use our phpcs special checker on non PHP-files.

Author: xendk

drupal/flycheck.el

@@ -67,7 +67,7 @@ See URL `http://pear.php.net/package/PHP_CodeSniffer/'."
   ;; We'd prefer to just check drupal-mode, but flycheck global mode
   ;; finds the checker before we get a chance to set drupal-mode.
   :predicate (lambda ()
-               (apply 'derived-mode-p (append drupal-php-modes drupal-css-modes drupal-js-modes drupal-info-modes))))
+               (apply 'derived-mode-p (append drupal-css-modes drupal-js-modes drupal-info-modes))))
 
 ;; Append our custom checker.
 (add-to-list 'flycheck-checkers 'drupal-phpcs t)