remove support for non-ANSI compilation

@@ -17,10 +17,12 @@
  * information: Portions Copyright [yyyy] [name of copyright owner]
  *
  * CDDL HEADER END
  */
 /*
+ * Copyright 2014 Garrett D'Amore <garrett@damore.org>
+ *
  * Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
  * Use is subject to license terms.
  */
 
 /*      Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */

@@ -96,16 +98,12 @@
                                                 /* hostid string */
 #define DOM_NM_LN               64              /* maximum length of domain */
                                                 /* name */
 
 #if !defined(_KERNEL)
-#if defined(__STDC__)
 int sysinfo(int, char *, long);
-#else
-int sysinfo();
 #endif
-#endif
 
 #ifdef  __cplusplus
 }
 #endif