log: move a log from info to debug level

This basically duplicates an info log further below that says "Generated..."

Change-Id: I32f22f71adc6dc2fbc7bcca5d277337baef3cd6d
diff --git a/src/db_auc.c b/src/db_auc.c
index b37d9db..a24f27e 100644
--- a/src/db_auc.c
+++ b/src/db_auc.c
@@ -197,7 +197,7 @@
 	if (rc <= 0)
 		return rc;
 
-	LOGAUC(imsi, LOGL_INFO, "Calling to generate %u vectors\n", num_vec);
+	LOGAUC(imsi, LOGL_DEBUG, "Calling to generate %u vectors\n", num_vec);
 	rc = auc_compute_vectors(vec, num_vec, &aud2g, &aud3g, rand_auts, auts);
 	if (rc < 0) {
 		num_vec = 0;