sgsn: Do not 'commit' implicitely when executing 'insert'

Currently the gprs_subscr_update function is called when the
'update-subscriber ... insert ...' command is executed. This will
eventually notify the GMM layer which is rather the purpose of the
'commit' command.

This patch removes the call from update_subscr_insert.

Sponsored-by: On-Waves ehf
diff --git a/openbsc/src/gprs/sgsn_vty.c b/openbsc/src/gprs/sgsn_vty.c
index 36711c2..a73b771 100644
--- a/openbsc/src/gprs/sgsn_vty.c
+++ b/openbsc/src/gprs/sgsn_vty.c
@@ -462,8 +462,6 @@
 	if (!strcmp(option, "authorized"))
 		subscr->authorized = atoi(value);
 
-	gprs_subscr_update(subscr);
-
 	subscr_put(subscr);
 
 	return CMD_SUCCESS;