linux-wandboard

MLK-16989-2 ARM64: dts: imx8mq: remove legacy fbdev dtbs

Remove below three dtbs related to legacy fbdev
on IMX8MQ platform:

   1. fsl-imx8mq-evk-4k.dtb
   2. fsl-imx8mq-evk-fbdev.dtb
   3. fsl-imx8mq-evk-lcdif-dsi.dtb

since the fbdev drivers are not supported and
maintained anymore.

Signed-off-by: Fancy Fang <chen.fang@nxp.com>