ospfd: Remove the blocking of opaque LSAs origination & flooding 'optimisation'

* Opaque support contains some kind of hack/optimisation to
  origination/flooding to suppress some origins/floods until an opaque LS
  Acks are received.  Previous versions of the code have already been shown
  to have bugs in them (see e16fd8a5, e.g.). It seems over-complex and fragile,
  plus its conceptually the wrong place to try implement flooding hacks that,
  AFAICT, do not depend particularly on the semantics of opaque LSA.

  Nuke.

Tested-by: Olivier Dugeon <olivier.dugeon@orange.com>
diff --git a/ospfd/ospf_vty.c b/ospfd/ospf_vty.c
index 2fcdedc..d57eb41 100644
--- a/ospfd/ospf_vty.c
+++ b/ospfd/ospf_vty.c
@@ -2723,11 +2723,9 @@
 	   CHECK_FLAG (ospf->config, OSPF_RFC1583_COMPATIBLE) ?
 	   "enabled" : "disabled", VTY_NEWLINE);
 #ifdef HAVE_OPAQUE_LSA
-  vty_out (vty, " OpaqueCapability flag is %s%s%s",
+  vty_out (vty, " OpaqueCapability flag is %s%s",
 	   CHECK_FLAG (ospf->config, OSPF_OPAQUE_CAPABLE) ?
            "enabled" : "disabled",
-           IS_OPAQUE_LSA_ORIGINATION_BLOCKED (ospf->opaque) ?
-           " (origination blocked)" : "",
            VTY_NEWLINE);
 #endif /* HAVE_OPAQUE_LSA */