Remove dead code left over from NITB split

There still is a lot of dead code that we inherited from the NITB
days, let's remove more of it.

libtrau will be re-introduced as part of osmo-mgw later.

Change-Id: I8e0af56a158f25a4f1384d667c03eb20e72df5b8
diff --git a/tests/gsm0408/gsm0408_test.c b/tests/gsm0408/gsm0408_test.c
index d2085a9..784c3e9 100644
--- a/tests/gsm0408/gsm0408_test.c
+++ b/tests/gsm0408/gsm0408_test.c
@@ -25,7 +25,7 @@
 #include <arpa/inet.h>
 
 #include <osmocom/bsc/common_bsc.h>
-#include <osmocom/bsc/gsm_subscriber.h>
+#include <osmocom/bsc/gsm_data.h>
 #include <osmocom/bsc/gsm_data_shared.h>
 #include <osmocom/bsc/debug.h>
 #include <osmocom/bsc/arfcn_range_encode.h>
@@ -715,7 +715,7 @@
 	osmo_init_logging(&log_info);
 	log_set_log_level(osmo_stderr_target, LOGL_INFO);
 
-	net = bsc_network_init(tall_bsc_ctx, 1, 1, NULL);
+	net = bsc_network_init(tall_bsc_ctx, 1, 1);
 	if (!net) {
 		printf("Network init failure.\n");
 		return EXIT_FAILURE;