wandboard: Remove CONFIG_SYS_FSL_USDHC_NUM

CONFIG_SYS_FSL_USDHC_NUM is not used for wandboard.
Signed-off-by: NFabio Estevam <fabio.estevam@freescale.com>
Acked-by: NOtavio Salvador <otavio@ossystems.com.br>

include/configs/wandboard.h

@@ -58,7 +58,6 @@
 #define CONFIG_FSL_ESDHC
 #define CONFIG_FSL_USDHC
 #define CONFIG_SYS_FSL_ESDHC_ADDR	0
-#define CONFIG_SYS_FSL_USDHC_NUM	2
 
 #define CONFIG_MMC
 #define CONFIG_CMD_MMC