remove support for non-ANSI compilation

@@ -19,10 +19,12 @@
  *
  * CDDL HEADER END
  */
 
 /*
+ * Copyright 2014 Garrett D'Amore <garrett@damore.org>
+ *
  * Copyright 1989 Sun Microsystems, Inc.  All rights reserved.
  * Use is subject to license terms.
  */
 
 /*      Copyright (c) 1984 AT&T */

@@ -29,23 +31,17 @@
 /*        All Rights Reserved   */
 
 #ifndef _GETWIDTH_H
 #define _GETWIDTH_H
 
-#pragma ident   "%Z%%M% %I%     %E% SMI"
-
 #include <euc.h>
 
 #ifdef  __cplusplus
 extern "C" {
 #endif
 
-#ifdef  __STDC__
 extern void getwidth(eucwidth_t *);
-#else   /* __STDC__ */
-extern void getwidth();
-#endif  /* __STDC__ */
 
 #ifdef  __cplusplus
 }
 #endif