iperf: Update to version 2.0.13

The removed patches are already integrated in the upstream version.

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>

package/network/utils/iperf/patches/0003-fix-non-ipv6-builds.patch

@@ -1,18 +1,16 @@
-Index: iperf-2.0.12/src/Listener.cpp
-===================================================================
---- iperf-2.0.12.orig/src/Listener.cpp
-+++ iperf-2.0.12/src/Listener.cpp
-@@ -670,6 +670,7 @@ int Listener::L2_setup (void) {
+--- a/src/Listener.cpp
++++ b/src/Listener.cpp
+@@ -723,6 +723,7 @@ int Listener::L2_setup (void) {
  
      // Now optimize packet flow up the raw socket
      // Establish the flow BPF to forward up only "connected" packets to this raw socket
 +#ifdef HAVE_IPV6
      if (l->sa_family == AF_INET6) {
+ #ifdef HAVE_IPV6
  	struct in6_addr *v6peer = SockAddr_get_in6_addr(&server->peer);
- 	struct in6_addr *v6local = SockAddr_get_in6_addr(&server->local);
-@@ -682,6 +683,9 @@ int Listener::L2_setup (void) {
- 	    WARN_errno( rc == SOCKET_ERROR, "l2 v4in6 connect ip bpf");
- 	}
+@@ -740,6 +741,9 @@ int Listener::L2_setup (void) {
+ 	return -1;
+ #endif /* HAVE_IPV6 */
      } else {
 +#else
 +    {