removed ponintless ENABLE_PORT_SECURITY define & reorganized config loading

src/game/desc_p2p.cpp

@@ -44,15 +44,6 @@ bool DESC_P2P::Setup(LPFDWATCH fdw, socket_t fd, const char * host, WORD wPort)
 
 	m_iMinInputBufferLen = 1024 * 1024;
 
-#ifdef ENABLE_PORT_SECURITY
-	if (strcmp(host, g_szPublicIP)) // refuse if remote host != public ip (only the same machine must be able to connect in here)
-	{
-		sys_log(0, "PORT_SECURITY: new p2p connection from [%s] to [%s] fd: %d BLOCKED", host, g_szPublicIP, m_sock);
-		SetPhase(PHASE_CLOSE);
-		return true;
-	}
-#endif
-
 	SetPhase(PHASE_P2P);
 
 	sys_log(0, "SYSTEM: new p2p connection from [%s] fd: %d", host, m_sock);