arm: Remove wb45n board

This board has not been converted to CONFIG_DM_MMC by the deadline.
Remove it.

Cc: Ben Whitten <ben.whitten@lairdtech.com>
Signed-off-by: Tom Rini <trini@konsulko.com>

configs/wb45n_defconfig

@@ -1,51 +0,0 @@
-CONFIG_ARM=y
-CONFIG_SYS_THUMB_BUILD=y
-CONFIG_ARCH_AT91=y
-CONFIG_SYS_TEXT_BASE=0x23f00000
-CONFIG_TARGET_WB45N=y
-CONFIG_SPL_GPIO_SUPPORT=y
-CONFIG_SPL_LIBCOMMON_SUPPORT=y
-CONFIG_SPL_LIBGENERIC_SUPPORT=y
-CONFIG_NR_DRAM_BANKS=1
-CONFIG_SYS_MEMTEST_START=0x20000000
-CONFIG_SYS_MEMTEST_END=0x23e00000
-CONFIG_ENV_OFFSET=0xA0000
-CONFIG_SPL_TEXT_BASE=0x300000
-CONFIG_SPL_SERIAL_SUPPORT=y
-CONFIG_SPL=y
-CONFIG_ENV_OFFSET_REDUND=0xC0000
-CONFIG_FIT=y
-CONFIG_SYS_EXTRA_OPTIONS="AT91SAM9X5,SYS_USE_NANDFLASH"
-CONFIG_BOOTDELAY=3
-CONFIG_USE_BOOTARGS=y
-CONFIG_BOOTARGS="console=ttyS0,115200 earlyprintk rw noinitrd mem=64M rootfstype=ubifs root=ubi0:rootfs ubi.mtd=6"
-CONFIG_BOARD_EARLY_INIT_F=y
-CONFIG_SPL_NAND_SUPPORT=y
-CONFIG_SPL_NAND_DRIVERS=y
-CONFIG_SPL_NAND_BASE=y
-CONFIG_HUSH_PARSER=y
-CONFIG_CMD_BOOTZ=y
-CONFIG_CMD_MEMTEST=y
-# CONFIG_CMD_FLASH is not set
-# CONFIG_CMD_LOADS is not set
-CONFIG_CMD_NAND=y
-CONFIG_CMD_NAND_TRIMFFS=y
-CONFIG_CMD_DHCP=y
-CONFIG_CMD_MII=y
-CONFIG_CMD_PING=y
-CONFIG_CMD_MTDPARTS=y
-CONFIG_ENV_OVERWRITE=y
-CONFIG_ENV_IS_IN_NAND=y
-CONFIG_SYS_REDUNDAND_ENVIRONMENT=y
-CONFIG_SYS_RELOC_GD_ENV_ADDR=y
-CONFIG_AT91_GPIO=y
-CONFIG_MTD=y
-CONFIG_MTD_RAW_NAND=y
-# CONFIG_SYS_NAND_USE_FLASH_BBT is not set
-CONFIG_NAND_ATMEL=y
-CONFIG_PMECC_CAP=4
-CONFIG_SPL_GENERATE_ATMEL_PMECC_HEADER=y
-CONFIG_ATMEL_USART=y
-CONFIG_LZMA=y
-CONFIG_LZO=y
-CONFIG_OF_LIBFDT=y