build: remove INRIA, NRL and MUSICA IPv6 quirks

Valar dohaeris.

Signed-off-by: David Lamparter <equinox@opensourcerouting.org>
Acked-by: Greg Troxel <gdt@ir.bbn.com>
Acked-by: Feng Lu <lu.feng@6wind.com>
Acked-by: Paul Jakma <paul@jakma.org>
diff --git a/lib/sockunion.c b/lib/sockunion.c
index 5dcf725..1a355d3 100644
--- a/lib/sockunion.c
+++ b/lib/sockunion.c
@@ -304,13 +304,8 @@
 	{
 #ifdef HAVE_STRUCT_SOCKADDR_IN6_SIN6_SCOPE_ID
 	  /* su.sin6.sin6_scope_id = ifindex; */
-#ifdef MUSICA
-	  su.sin6.sin6_scope_id = ifindex; 
-#endif
 #endif /* HAVE_STRUCT_SOCKADDR_IN6_SIN6_SCOPE_ID */
-#ifndef MUSICA
 	  SET_IN6_LINKLOCAL_IFINDEX (su.sin6.sin6_addr, ifindex);
-#endif
 	}
 #endif /* KAME */
       break;
@@ -394,7 +389,7 @@
 #endif /* SIN6_LEN */
       if (su_addr == NULL)
 	{
-#if defined(LINUX_IPV6) || defined(NRL)
+#ifdef LINUX_IPV6
 	  memset (&su->sin6.sin6_addr, 0, sizeof (struct in6_addr));
 #else
 	  su->sin6.sin6_addr = in6addr_any;