Use lexical-binding in solitaire.el

* lisp/play/solitaire.el: Use lexical-binding.  Remove redundant
:group args.

diff --git a/lisp/play/solitaire.el b/lisp/play/solitaire.el
index 5c1dd061c9c752bfc4c9fbda8f6bd3f0f8cf3f60..1383efe37cd914d8a9a4ba58177034323a298d95 100644 (file)
--- a/lisp/play/solitaire.el
+++ b/lisp/play/solitaire.el
@@ -1,4 +1,4 @@
-;;; solitaire.el --- game of solitaire in Emacs Lisp
+;;; solitaire.el --- game of solitaire in Emacs Lisp  -*- lexical-binding: t -*-
 
 ;; Copyright (C) 1994, 2001-2020 Free Software Foundation, Inc.
 
@@ -38,8 +38,7 @@
 
 (defcustom solitaire-mode-hook nil
   "Hook to run upon entry to Solitaire."
-  :type 'hook
-  :group 'solitaire)
+  :type 'hook)
 
 (defvar solitaire-mode-map
   (let ((map (make-sparse-keymap)))
@@ -119,8 +118,7 @@ The usual mnemonic keys move the cursor around the board; in addition,
   "Non-nil means check for possible moves after each major change.
 This takes a while, so switch this on if you like to be informed when
 the game is over, or off, if you are working on a slow machine."
-  :type 'boolean
-  :group 'solitaire)
+  :type 'boolean)
 
 (defconst solitaire-valid-directions
   '(solitaire-left solitaire-right solitaire-up solitaire-down))