Not sure why you need it and what exactly you mena by "remove"
Expired savesets will get overwritten when a media becomes recyclable, it's 
managed by NW and needs no manual intervention.

If you want to remove some savesets from media database - you can do it with 
nsrmm:
nsrmm -S <SSID>/<CLONEID> -d
you must use SSID/CLONEID combination, can be found by querying mminfo.

If you want to delete media (tape) which contains you saveset - same nsrmm 
helps, but you only delete it from media database.  Actual data remains on tape 
- you'd need to overwrite the tape or physically destroy it

+----------------------------------------------------------------------
|This was sent by dmitri_ryjikh AT ml DOT com via Backup Central.
|Forward SPAM to abuse AT backupcentral DOT com.
+----------------------------------------------------------------------

To sign off this list, send email to listserv AT listserv.temple DOT edu and 
type "signoff networker" in the body of the email. Please write to 
networker-request AT listserv.temple DOT edu if you have any problems with this 
list. You can access the archives at 
http://listserv.temple.edu/archives/networker.html or
via RSS at http://listserv.temple.edu/cgi-bin/wa?RSS&L=NETWORKER