mx6ul_14x14_evk: Remove CONFIG_SYS_GENERIC_BOARD

CONFIG_SYS_GENERIC_BOARD is selected by mx6_common.h, so there is no
need to define it locally.

Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Reviewed-by: Peng Fan <Peng.Fan@freescale.com>

include/configs/mx6ul_14x14_evk.h

@@ -24,7 +24,6 @@
 #define CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG
 
 #define CONFIG_ROM_UNIFIED_SECTIONS
-#define CONFIG_SYS_GENERIC_BOARD
 #define CONFIG_DISPLAY_CPUINFO
 #define CONFIG_DISPLAY_BOARDINFO