systemd: remove systemd from distro features
systemd: remove systemd from distro features

It caused issues when generating SDK images, conflicting with sysvinit on
deploying telinit.

Signed-off-by: Razvan Stefanescu <f4ee3fcb6e54dcf71fbaefdd500eea5cee1f4f99@microchip.com>

linux4sam/meta-atmel,linux4sam/meta-atmel,linux4sam/meta-atmel,linux4sam/meta-atmel,linux4sam/meta-atmel