Remove unused variables

Author: taku0

swift-mode-beginning-of-defun.el

@@ -579,7 +579,6 @@ Both functions return t if succeeded, return nil otherwise."
         (point-was-after-mark
          (and (mark t)
               (< (mark t) (point))))
-        new-region-and-direction
         new-region
         new-direction
         last-successful-region)

swift-mode-font-lock.el

@@ -228,8 +228,9 @@ This function does not search beyond LIMIT."
   (goto-char pos)
   (forward-comment (- (point)))
   (skip-syntax-backward "w_")
-  (looking-at
-   "\\<\\(func\\|enum\\|struct\\|class\\|protocol\\|extension\\)\\>"))
+  (and (< (point) limit)
+       (looking-at
+        "\\<\\(func\\|enum\\|struct\\|class\\|protocol\\|extension\\)\\>")))
 
 (defun swift-mode:property-access-pos-p (pos limit)
   "Return t if POS is just before the property name of a member expression.