vty: Use vty_install_default() instead of bsc_install_default()

Remove ournode_exit_cmd, ournode_end_cmd, and bsc_install_default()
since this functionality is provided by the current libosmocore.

Replace calls to bsc_install_default() by call to
vty_install_default() with the following semantic patch:

    @rule1@
    expression N;
    @@
    - bsc_install_default(N);
    + vty_install_default(N);

Ticket: OW#952
Sponsored-by: On-Waves ehf
diff --git a/openbsc/src/libmsc/smpp_vty.c b/openbsc/src/libmsc/smpp_vty.c
index bf503f5..75427a9 100644
--- a/openbsc/src/libmsc/smpp_vty.c
+++ b/openbsc/src/libmsc/smpp_vty.c
@@ -509,7 +509,7 @@
 int smpp_vty_init(void)
 {
 	install_node(&smpp_node, config_write_smpp);
-	bsc_install_default(SMPP_NODE);
+	vty_install_default(SMPP_NODE);
 	install_element(CONFIG_NODE, &cfg_smpp_cmd);
 
 	install_element(SMPP_NODE, &cfg_smpp_port_cmd);
@@ -519,7 +519,7 @@
 	install_element(SMPP_NODE, &cfg_no_esme_cmd);
 
 	install_node(&esme_node, config_write_esme);
-	bsc_install_default(SMPP_ESME_NODE);
+	vty_install_default(SMPP_ESME_NODE);
 	install_element(SMPP_ESME_NODE, &cfg_esme_passwd_cmd);
 	install_element(SMPP_ESME_NODE, &cfg_esme_no_passwd_cmd);
 	install_element(SMPP_ESME_NODE, &cfg_esme_route_pfx_cmd);
@@ -532,7 +532,6 @@
 	install_element(SMPP_ESME_NODE, &cfg_esme_no_osmo_ext_cmd);
 	install_element(SMPP_ESME_NODE, &cfg_esme_dcs_transp_cmd);
 	install_element(SMPP_ESME_NODE, &cfg_esme_no_dcs_transp_cmd);
-	install_element(SMPP_ESME_NODE, &ournode_exit_cmd);
 
 	install_element_ve(&show_esme_cmd);