Integrate meta-seconorth-distro/remove_wic_image

Commit: seco-ne/yocto/layers/meta-seconorth-distro@c35a0e18

image:wic: Removed WIC image layout file

We have a multi-image system setup that can't easily be created with the WIC tool. Because of this, we don't support WIC images at the moment. Remove the layout file for now.