Doug Goldstein authored Aug 27, 2018 and Jan Beulich committed Aug 27, 2018

The tboot targets are woefully out of date. These should really be
retired because setting up tboot is more complex than the build process
for it.

Signed-off-by: Doug Goldstein <cardoe@cardoe.com>
Acked-by: Jan Beulich <jbeulich@suse.com>
Acked-by: Wei Liu <wei.liu2@citrix.com>
Reviewed-by: Christopher Clark <christopher.clark6@baesystems.com>