mx6ul_14x14_evk: Do not undef config options

There is no need to undef the config options.

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

include/configs/mx6ul_14x14_evk.h

@@ -49,13 +49,6 @@
 #define CONFIG_SUPPORT_EMMC_BOOT /* eMMC specific */
 #endif
 
-#undef CONFIG_BOOTM_NETBSD
-#undef CONFIG_BOOTM_PLAN9
-#undef CONFIG_BOOTM_RTEMS
-
-#undef CONFIG_CMD_EXPORTENV
-#undef CONFIG_CMD_IMPORTENV
-
 /* I2C configs */
 #define CONFIG_CMD_I2C
 #ifdef CONFIG_CMD_I2C
@@ -70,8 +63,6 @@
 #define CONFIG_POWER_PFUZE3000_I2C_ADDR  0x08
 #endif
 
-#undef CONFIG_CMD_IMLS
-
 #define CONFIG_SYS_MMC_IMG_LOAD_PART	1
 
 #define CONFIG_EXTRA_ENV_SETTINGS \