images: remove niconsole-image-safe
images: remove niconsole-image-safe

The niconsole-image-safe image recipe is used as the safemode rootfs on
ARM Zynq-based machines. That machine type is not currently supported in
NILRT hardknott.

Remove this image for code cleanliness.

Signed-off-by: Alex Stewart <04cdb2793e4fb0120cc30d1c823099f3862701f4@ni.com>

ni/meta-nilrt,ni/meta-nilrt,ni/meta-nilrt,ni/meta-nilrt,ni/meta-nilrt