sh: remove duplicated #include

Remove duplicated #include('s) in
  arch/sh/boards/mach-ecovec24/setup.c
Signed-off-by: Huang Weiyi <weiyi.huang@gmail.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>

arch/sh/boards/mach-ecovec24/setup.c

@@ -25,7 +25,6 @@
 #include <linux/spi/spi.h>
 #include <linux/spi/sh_msiof.h>
 #include <linux/spi/mmc_spi.h>
-#include <linux/mmc/host.h>
 #include <linux/input.h>
 #include <linux/input/sh_keysc.h>
 #include <video/sh_mobile_lcdc.h>