Drop IoT image support
Due to changes in priorities we no longer support Kanto and given the IoT image is essentially a fixedfunction image with Kanto support on top, let's drop it.
This also drops cloud2edge setup support which is used only by IoT image tests.
Signed-off-by: Andre Moreira Magalhaes andre.magalhaes@collabora.com
Edited by Andre Moreira Magalhaes