mncc: Remove FIXME about queuing messages

mncc_sock_from_cc will discard the messages when the
fd has been set to -1.
diff --git a/openbsc/src/libmsc/mncc_sock.c b/openbsc/src/libmsc/mncc_sock.c
index 3ab40a8..7063f20 100644
--- a/openbsc/src/libmsc/mncc_sock.c
+++ b/openbsc/src/libmsc/mncc_sock.c
@@ -92,8 +92,6 @@
 	/* re-enable the generation of ACCEPT for new connections */
 	state->listen_bfd.when |= BSC_FD_READ;
 
-	/* FIXME: make sure we don't enqueue anymore */
-
 	/* release all exisitng calls */
 	gsm0408_clear_all_trans(state->net, GSM48_PDISC_CC);