(base_name): Remove decl, as system.h now declares it.

src/rtapelib.c

@@ -1,5 +1,7 @@
 /* Functions for communicating with a remote tape drive.
-   Copyright 1988,92,94,96,97,99,2000, 2001 Free Software Foundation, Inc.
+
+   Copyright 1988, 1992, 1994, 1996, 1997, 1999, 2000, 2001 Free Software
+   Foundation, Inc.
 
    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
@@ -58,8 +60,6 @@
 
 #include "rmt.h"
 
-char *base_name PARAMS ((char const *));
-
 /* Exit status if exec errors.  */
 #define EXIT_ON_EXEC_ERROR 128