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 (c) 1992, 2010, Oracle and/or its affiliates. All rights reserved.
  */
 
 #ifndef _SYS_INSTANCE_H
 #define _SYS_INSTANCE_H

@@ -132,15 +134,11 @@
 #define INST_WALK_CONTINUE      0
 #define INST_WALK_TERMINATE     1
 
 
 #else   /* _KERNEL */
-#ifdef __STDC__
 extern int inst_sync(char *pathname, int flags);
-#else
-extern int inst_sync();
-#endif  /* __STDC__ */
 #endif  /* _KERNEL */
 
 #define INST_SYNC_IF_REQUIRED   0
 #define INST_SYNC_ALWAYS        1