ARM: mx25: Remove mach-mx25_3ds board file

imx25-pdk.dts provides a more complete support than the board file version, so
let's get rid of the board file.

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

arch/arm/mach-imx/Makefile

@@ -49,7 +49,6 @@ obj-$(CONFIG_MACH_IMX1_DT) += imx1-dt.o
 obj-$(CONFIG_MACH_MX21ADS) += mach-mx21ads.o
 
 # i.MX25 based machines
-obj-$(CONFIG_MACH_MX25_3DS) += mach-mx25_3ds.o
 obj-$(CONFIG_MACH_EUKREA_CPUIMX25SD) += mach-eukrea_cpuimx25.o
 obj-$(CONFIG_MACH_EUKREA_MBIMXSD25_BASEBOARD) += eukrea_mbimxsd25-baseboard.o
 obj-$(CONFIG_MACH_IMX25_DT) += imx25-dt.o