This variable has been deprecated a while and Paul Eggleton suggested
we finally remove it from the glossary. I removed it and also
took away the two links from where the variable was referenced
in a couple spots in the migration section.
(From yocto-docs rev: 2b3c762428bd9ca64087ba6359c4eb5fb5a3db84)
Signed-off-by: Scott Rifenbark <scott.m.rifenbark@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>