arm64: mvebu: armada-7k/8k: drop useless #ifdef

CONFIG_ENV_IS_IN_NAND has been removed in commit 2be296538e2e (Convert
CONFIG_ENV_IS_IN_MMC/NAND/UBI and NOWHERE to Kconfig).
CONFIG_ENV_IS_IN_SPI_FLASH has been removed in commit 91c868fe7cd
(Convert CONFIG_ENV_IS_IN_SPI_FLASH to Kconfig). The environment #ifdef
is now empty. Remove it.

Signed-off-by: Baruch Siach <baruch@tkos.co.il>
Signed-off-by: Stefan Roese <sr@denx.de>

include/configs/mvebu_armada-8k.h

@@ -73,11 +73,6 @@
 #define CONFIG_SF_DEFAULT_MODE		SPI_MODE_0
 #define CONFIG_ENV_SPI_MODE		CONFIG_SF_DEFAULT_MODE
 
-/* Environment in SPI NOR flash */
-#ifdef CONFIG_MVEBU_SPI_BOOT
-/* Environment in NAND flash */
-#endif
-
 #define CONFIG_ENV_OFFSET		0x180000 /* as Marvell U-Boot version */
 #define CONFIG_ENV_SIZE			(64 << 10) /* 64KiB */
 #define CONFIG_ENV_SECT_SIZE		(64 << 10) /* 64KiB sectors */