core-image-tiny-initramfs: initramfs recipes should not generate an actual image file
core-image-tiny-initramfs was used to generate a wic image, which was conceptually wrong
since initrafms recipes should only generate the boot artifacts that can later be used
by another recipe to generate an image using the tool of their choice.
Signed-off-by: Alejandro Hernandez <alejandro.hernandez@linux.intel.com> Signed-off-by: Ross Burton <ross.burton@intel.com>
