ISDN: i4l, remove cvs crap

CVS $Id$ is unused and makes no sense in our tree. Get rid of that.
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Cc: Karsten Keil <isdn@linux-pingi.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/isdn/i4l/isdn_tty.c

-/* $Id: isdn_tty.c,v 1.1.2.3 2004/02/10 01:07:13 keil Exp $
- *
+/*
  * Linux ISDN subsystem, tty functions and AT-command emulator (linklevel).
  *
  * Copyright 1994-1999  by Fritz Elfert (fritz@isdn4linux.de)
@@ -48,9 +47,6 @@ static int bit2si[8] =
 static int si2bit[8] =
 {4, 1, 4, 4, 4, 4, 4, 4};
 
-char *isdn_tty_revision = "$Revision: 1.1.2.3 $";
-
-
 /* isdn_tty_try_read() is called from within isdn_tty_rcv_skb()
  * to stuff incoming data directly into a tty's flip-buffer. This
  * is done to speed up tty-receiving if the receive-queue is empty.