packages: remove non-IPv6 enabler patches

These are no longer required so remove them.

Signed-off-by: Gustavo Zacarias <gustavo@zacarias.com.ar>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

package/libnice/0001-build-IPV6_RECVERR.patch

@@ -1,20 +0,0 @@
-Make libnice build in non-IPv6 configurations
-
-Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
-
-Index: b/stun/usages/bind.c
-===================================================================
---- a/stun/usages/bind.c
-+++ b/stun/usages/bind.c
-@@ -260,9 +260,11 @@
-       case AF_INET:
-         setsockopt (fd, SOL_IP, IP_RECVERR, &yes, sizeof (yes));
-         break;
-+#ifdef IPV6_RECVERR
-       case AF_INET6:
-         setsockopt (fd, SOL_IPV6, IPV6_RECVERR, &yes, sizeof (yes));
-         break;
-+#endif
-       default:
-         /* Nothing to do. */
-         break;