remove support for non-ANSI compilation

@@ -18,29 +18,28 @@
  * information: Portions Copyright [yyyy] [name of copyright owner]
  *
  * CDDL HEADER END
  */
 /*
+ * Copyright 2014 Garrett D'Amore <garrett@damore.org>
+ *
  * Copyright 2003 Sun Microsystems, Inc.  All rights reserved.
  * Use is subject to license terms.
  */
 
 #ifndef _ICONV_H
 #define _ICONV_H
 
-#pragma ident   "%Z%%M% %I%     %E% SMI"
-
 #include <sys/feature_tests.h>
 #include <sys/types.h>
 
 #ifdef  __cplusplus
 extern "C" {
 #endif
 
 typedef struct _iconv_info *iconv_t;
 
-#if defined(__STDC__)
 extern iconv_t  iconv_open(const char *, const char *);
 #ifdef _XPG6
 extern size_t   iconv(iconv_t, char **_RESTRICT_KYWD,
                 size_t *_RESTRICT_KYWD, char **_RESTRICT_KYWD,
                 size_t *_RESTRICT_KYWD);

@@ -48,15 +47,10 @@
 extern size_t   iconv(iconv_t, const char **_RESTRICT_KYWD,
                 size_t *_RESTRICT_KYWD, char **_RESTRICT_KYWD,
                 size_t *_RESTRICT_KYWD);
 #endif
 extern int      iconv_close(iconv_t);
-#else /* __STDC__ */
-extern iconv_t  iconv_open();
-extern size_t   iconv();
-extern int      iconv_close();
-#endif
 
 #ifdef  __cplusplus
 }
 #endif