gptel-gh: Removed unnecessary call to (current-time)

(float-time) will implicitly use (current-time) if the argument is not specified.

Author: marcus-lundgren

gptel-gh.el

@@ -260,8 +260,7 @@ Then we need a session token."
                gptel--gh-token))
     (when (or (null token)
               (and expires_at
-                   (> (round (float-time (current-time)))
-                      expires_at)))
+                   (> (round (float-time)) expires_at)))
       (gptel--gh-renew-token))))
 
 ;;;###autoload