configs: thuban, rastaban: remove emmc

These targets use NAND FLASH only. Maybe some MMC definitions were added by
trying MMC for the etamin target evaluation and were not removed.

Signed-off-by: Enrico Leto <enrico.leto@siemens.com>
diff --git a/configs/draco-thuban_defconfig b/configs/draco-thuban_defconfig
index 63225d2..9046ca0 100644
--- a/configs/draco-thuban_defconfig
+++ b/configs/draco-thuban_defconfig
@@ -14,7 +14,6 @@
 CONFIG_AM33XX=y
 CONFIG_SYS_MPUCLK=300
 CONFIG_TARGET_THUBAN=y
-CONFIG_SPL_MMC=y
 CONFIG_SPL_SERIAL=y
 CONFIG_BOOTCOUNT_BOOTLIMIT=3
 CONFIG_SPL=y
@@ -39,6 +38,7 @@
 CONFIG_SPL_SYS_MALLOC=y
 CONFIG_SPL_HAS_CUSTOM_MALLOC_START=y
 CONFIG_SPL_CUSTOM_SYS_MALLOC_ADDR=0x80208000
+# CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_USE_SECTOR is not set
 CONFIG_SPL_I2C=y
 CONFIG_SPL_NAND_DRIVERS=y
 CONFIG_SPL_NAND_ECC=y
@@ -55,7 +55,6 @@
 # CONFIG_CMD_FLASH is not set
 CONFIG_CMD_GPIO=y
 CONFIG_CMD_I2C=y
-CONFIG_CMD_MMC=y
 CONFIG_CMD_NAND=y
 CONFIG_CMD_USB=y
 # CONFIG_CMD_SETEXPR is not set
@@ -90,8 +89,7 @@
 CONFIG_SYS_DFU_DATA_BUF_SIZE=0x100000
 CONFIG_SYS_I2C_LEGACY=y
 CONFIG_SPL_SYS_I2C_LEGACY=y
-# CONFIG_SPL_DM_MMC is not set
-CONFIG_MMC_OMAP_HS=y
+# CONFIG_MMC is not set
 CONFIG_MTD=y
 CONFIG_MTD_RAW_NAND=y
 CONFIG_SYS_NAND_BLOCK_SIZE=0x20000