apalis-imx8: remove obsolete sdhc related config defines

Remove obsolete SDHC related config defines. Nowadays, all SDHC related
hardware configuration comes from the device tree.

Signed-off-by: Marcel Ziswiler <marcel.ziswiler@toradex.com>
Signed-off-by: Francesco Dolcini <francesco.dolcini@toradex.com>
Reviewed-by: Fabio Estevam <festevam@denx.de>
1 file changed