ARM: OMAP: Remove unnecessary inclusion of dmtimer.h

Some source files are including dmtimer.h but not actually using any dmtimer
definitions or functions. Therefore, remove the inclusion dmtimer.h from these
source files.

Signed-off-by: Jon Hunter <jon-hunter@ti.com>
Acked-by: Omar Ramirez Luna <omar.luna@linaro.org>

arch/arm/mach-omap1/timer32k.c

@@ -51,7 +51,6 @@
 #include <asm/mach/time.h>
 
 #include <plat/counter-32k.h>
-#include <plat/dmtimer.h>
 
 #include <mach/hardware.h>