Revert "stub for pledge(2) for systems that lack it"

This reverts commit 14c887c839.

dtucker beat me to it :/

openbsd-compat/bsd-pledge.c

@@ -1,14 +0,0 @@
-/* Placed in the public domain.  */
-
-#include "includes.h"
-
-#ifndef HAVE_PLEDGE
-
-/* Stub; real implementations wanted. */
-int
-pledge(const char *promises, const char *paths[])
-{
-	return 0;
-}
-
-#endif /* HAVE_PLEDGE */

openbsd-compat/openbsd-compat.h

@@ -264,10 +264,6 @@ int	bcrypt_pbkdf(const char *, size_t, const u_int8_t *, size_t,
 void explicit_bzero(void *p, size_t n);
 #endif
 
-#ifndef HAVE_PLEDGE
-int pledge(const char *promises, const char *paths[]);
-#endif /* HAVE_PLEDGE */
-
 void *xmmap(size_t size);
 char *xcrypt(const char *password, const char *salt);
 char *shadow_pw(struct passwd *pw);