ARM: dts: imx6q-vicut1.dts: remove sata node

Only the prototype had the SATA interface. There are no existing products
with SATA interface and no plans to add any.

Signed-off-by: David Jander <david@protonic.nl>
Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>