vty: remove ignored logging parameters

Since ce9fec3e896571835ac5bfd2980d6836f2b29f0d libosmocore ignores
parameters to log_vty_command_* functions. Hence parameter of
logging_vty_add_cmds() is ignored too. As we depend on much later
libosmocore version anyway, we can simplify code somewhat by removing
parameters which will be ignored anyway.

Change-Id: I62f752fd88f1d8fefa563648f9864c7c31f87991
diff --git a/openbsc/src/osmo-bsc/osmo_bsc_main.c b/openbsc/src/osmo-bsc/osmo_bsc_main.c
index 1d96bb4..adce775 100644
--- a/openbsc/src/osmo-bsc/osmo_bsc_main.c
+++ b/openbsc/src/osmo-bsc/osmo_bsc_main.c
@@ -212,7 +212,7 @@
 	/* This needs to precede handle_options() */
 	vty_info.copyright = openbsc_copyright;
 	vty_init(&vty_info);
-	bsc_vty_init(&log_info, bsc_gsmnet);
+	bsc_vty_init(bsc_gsmnet);
 	bsc_msg_lst_vty_init(tall_bsc_ctx, &access_lists, BSC_NODE);
 	ctrl_vty_init(tall_bsc_ctx);