Remove the !HAVE_SOCKETPAIR case. We use socketpair unconditionally in other

places and the survey data we have does not show any systems that use it.
"nuke it" djm@

monitor.c

@@ -1853,13 +1853,8 @@ mm_init_compression(struct mm_master *mm)
 static void
 monitor_socketpair(int *pair)
 {
-#ifdef HAVE_SOCKETPAIR
 	if (socketpair(AF_UNIX, SOCK_STREAM, 0, pair) == -1)
 		fatal("%s: socketpair", __func__);
-#else
-	fatal("%s: UsePrivilegeSeparation=yes not supported",
-	    __func__);
-#endif
 	FD_CLOSEONEXEC(pair[0]);
 	FD_CLOSEONEXEC(pair[1]);
 }