Revert "intel-corei7-64.coffee: Define attribute for the yocto flasher image"
Revert "intel-corei7-64.coffee: Define attribute for the yocto flasher image"

This reverts commit 9b4a662b00551bd6dfc243bf1f8663aa2d90cfc6.

We revert this because the UI part is not ready yet.

resin-os/resin-intel