The machine_branch and machine_srcrev variables were set but not used in
do_kernel_metadata.
(From OE-Core rev: ee358e03b1ad6eb0624cee0306fef807de0116a6)
Signed-off-by: Paul Barker <pbarker@konsulko.com>
Signed-off-by: Bruce Ashfield <bruce.ashfield@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>