use_systemd typo/leftover in remote.c

so I had an old config.h lying around which made the compiler believe
that the system doesn't have sys/un.h.

/usr/src/usr.sbin/nsd/remote.c:2377:8: error: use of undeclared identifier
      'use_systemd'
        (void)use_systemd;
              ^
1 error generated.

however, use_systemd doesn't exist anyway in global scope, just
dropping it is probably correct. I'm fresh out of systems that support
systemd but don't have sys/un.h to test on though ;)

diff --git remote.c remote.c
index 24486e37..a4934c30 100644
--- remote.c
+++ remote.c
@@ -2390,7 +2390,6 @@ err:
 	return -1;
 
 #else
-	(void)use_systemd;
 	(void)path;
 	log_msg(LOG_ERR, "Local sockets are not supported");
 	*noproto = 1;


-- 
I'm not entirely sure you are real.