ARM: imx: Remove eukrea_mbimxsd35 non-dt support

eukrea_mbimxsd35 board has device tree support, so we can get rid of the
board related files.

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