ARM: imx: Remove mach-mx51_3ds board

mach-mx51_3ds only supports old silicon version of MX51 and was replaced
with mx51 babbage, which is the official MX51 development board.

No need to maintain it anymore.

Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>

arch/arm/configs/imx_v6_v7_defconfig

@@ -32,7 +32,6 @@ CONFIG_MACH_PCM043=y
 CONFIG_MACH_MX35_3DS=y
 CONFIG_MACH_VPR200=y
 CONFIG_MACH_IMX51_DT=y
-CONFIG_MACH_MX51_3DS=y
 CONFIG_MACH_EUKREA_CPUIMX51SD=y
 CONFIG_SOC_IMX53=y
 CONFIG_SOC_IMX6Q=y

arch/arm/mach-imx/Kconfig

@@ -776,19 +776,6 @@ config MACH_MX51_BABBAGE
 	  u-boot. This includes specific configurations for the board and its
 	  peripherals.
 
-config MACH_MX51_3DS
-	bool "Support MX51PDK (3DS)"
-	select IMX_HAVE_PLATFORM_IMX2_WDT
-	select IMX_HAVE_PLATFORM_IMX_KEYPAD
-	select IMX_HAVE_PLATFORM_IMX_UART
-	select IMX_HAVE_PLATFORM_SDHCI_ESDHC_IMX
-	select IMX_HAVE_PLATFORM_SPI_IMX
-	select MXC_DEBUG_BOARD
-	select SOC_IMX51
-	help
-	  Include support for MX51PDK (3DS) platform. This includes specific
-	  configurations for the board and its peripherals.
-
 config MACH_EUKREA_CPUIMX51SD
 	bool "Support Eukrea CPUIMX51SD module"
 	select IMX_HAVE_PLATFORM_FSL_USB2_UDC

arch/arm/mach-imx/Makefile

@@ -102,7 +102,6 @@ endif
 
 # i.MX5 based machines
 obj-$(CONFIG_MACH_MX51_BABBAGE) += mach-mx51_babbage.o
-obj-$(CONFIG_MACH_MX51_3DS) += mach-mx51_3ds.o
 obj-$(CONFIG_MACH_EUKREA_CPUIMX51SD) += mach-cpuimx51sd.o
 obj-$(CONFIG_MACH_EUKREA_MBIMXSD51_BASEBOARD) += eukrea_mbimxsd51-baseboard.o
 obj-$(CONFIG_MACH_MX50_RDP) += mach-mx50_rdp.o