configs: dra7xx_evm: Remove ENV_IS_IN_FAT

With U-boot supporting environment in multiple places, enable only
ENV_IS_IN_EMMC

Signed-off-by: Faiz Abbas <faiz_abbas@ti.com>
Reviewed-by: Lokesh Vutla <lokeshvutla@ti.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
diff --git a/configs/dra7xx_hs_evm_defconfig b/configs/dra7xx_hs_evm_defconfig
index 3cf7659..ee28e0c 100644
--- a/configs/dra7xx_hs_evm_defconfig
+++ b/configs/dra7xx_hs_evm_defconfig
@@ -40,6 +40,7 @@
 CONFIG_SPL_MULTI_DTB_FIT=y
 CONFIG_SPL_MULTI_DTB_FIT_UNCOMPRESS_SZ=0x9000
 CONFIG_OF_SPL_REMOVE_PROPS="clocks clock-names interrupt-parent"
+# CONFIG_ENV_IS_IN_FAT is not set
 CONFIG_ENV_IS_IN_MMC=y
 CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG=y
 CONFIG_DM=y