For some reason (Deuce?) it was allowing non-root users to attempt to rebind

low ports, even if DONT_BLAME_SYNCHRONET was not defined, which of course
would fail. Afaik, no Unix should allow this and I'm not sure why it was
using _THREAD_SUID_BROKEN (e.g. LinuxThreads) for this determination at all.

src/sbbs3/sbbscon.c

@@ -1586,7 +1586,7 @@ int main(int argc, char** argv)
 
 			/* Can't recycle servers (re-bind ports) as non-root user */
 			/* If DONT_BLAME_SYNCHRONET is set, keeps root credentials laying around */
-#if !defined(DONT_BLAME_SYNCHRONET) && !defined(_THREAD_SUID_BROKEN)
+#if !defined(DONT_BLAME_SYNCHRONET)
  			if(bbs_startup.telnet_port < IPPORT_RESERVED
 				|| (bbs_startup.options & BBS_OPT_ALLOW_RLOGIN
 					&& bbs_startup.rlogin_port < IPPORT_RESERVED))