wic-image-minimal: stop using core-image-minimal
Removed dependency to core-image-minimal rootfs from the
recipe and .wks file. This was a bad idea as recipes are
not allowed to use other recipe's rootfs or anything else
from workdir.
This should also fix test_qemu test case when rm_work is
enabled.
Signed-off-by: Ed Bartosh <ed.bartosh@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>