board/radxa/rock5b: there is no need to specify rootfstype
The ext4 rootfs is mounted as ext4 perfectly fine without rootfstype
specified on the kernel command line.
In order to keep the kernel command line clean, remove the superfluous
kernel parameter.
Signed-off-by: Niklas Cassel <cassel@kernel.org>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Niklas Cassel