tests/hnb-test: Drop unused variables

Change-Id: I12870a1cf2462b7cc2868a54f58416e03a856084
diff --git a/src/tests/hnb-test.c b/src/tests/hnb-test.c
index 27959ec..4b726fa 100644
--- a/src/tests/hnb-test.c
+++ b/src/tests/hnb-test.c
@@ -81,7 +81,7 @@
 static int hnb_test_ue_de_register_tx(struct hnb_test *hnb_test)
 {
 	struct msgb *msg;
-	int rc, imsi_len;
+	int rc;
 	uint32_t ctx_id;
 
 	UEDe_Register_t dereg;
@@ -320,7 +320,6 @@
 				    int len)
 {
 	struct gsm48_auth_req *ar;
-	int parse_res;
 
 	len -= (const char *)&gh->data[0] - (const char *)gh;
 
@@ -629,7 +628,7 @@
 
 static int hnb_write_cb(struct osmo_fd *fd, struct msgb *msg)
 {
-	struct hnb_test *ctx = fd->data;
+	/* struct hnb_test *ctx = fd->data; */
 	struct sctp_sndrcvinfo sinfo = {
 		.sinfo_ppid = htonl(msgb_sctp_ppid(msg)),
 		.sinfo_stream = 0,