fix bug

system info duplicate like "[usr@host] [user@host]" when completing-read
is adviced

emacs.el

@@ -2083,7 +2083,7 @@ this is test, does not rename files"
               (concat my-system-info
                       (ad-get-arg 0))))
 
-(defadvice completing-read (before info-in-prompt activate)
-  (ad-set-arg 0
-              (concat my-system-info
-                      (ad-get-arg 0))))
+;; (defadvice completing-read (before info-in-prompt activate)
+;;   (ad-set-arg 0
+;;               (concat my-system-info
+;;                       (ad-get-arg 0))))