fastboot: Remove unused gpt vars in image_part_details

These vars are no longer used.

BUG=b:63407238
TEST=build and boot

Change-Id: Id35cd2f29b37854f729f8c95cc53fd04279e2d6e
Signed-off-by: Jeffy Chen <jeffy.chen@rock-chips.com>
Reviewed-on: https://chromium-review.googlesource.com/715937
Reviewed-by: Julius Werner <jwerner@chromium.org>
1 file changed