COPYING fix text mismatch

Fixes #1458

Author: jdavid

COPYING

@@ -316,9 +316,8 @@ the "copyright" line and a pointer to where the full notice is found.
     Copyright (C) <year>  <name of author>
 
     This program is free software; you can redistribute it and/or modify
-    it under the terms of the GNU General Public License as published by
-    the Free Software Foundation; either version 2 of the License, or
-    (at your option) any later version.
+    it under the terms of the GNU General Public License, version 2,
+    as published by the Free Software Foundation.
 
     This program is distributed in the hope that it will be useful,
     but WITHOUT ANY WARRANTY; without even the implied warranty of