Make it possible to do "iscsictl -Rt xxx -p yyy", to remove a session
that matches both -t and -p.

MFC after:	1 month
Sponsored by:	The FreeBSD Foundation


git-svn-id: svn+ssh://svn.freebsd.org/base/head@274549 ccf9f872-aa2e-dd11-9fc8-001c23d0bc1f