Remove unused branches
Remove unused branches

These branches have been merged to master already and
there should be no further development on them, so no
need to have them here as an option.

Signed-off-by: Frederico Mazzone <e878d16deecffe8b35cef9a75715570b13193bd0@citrix.com>

robhoes/xenserver-build-env,robhoes/xenserver-build-env