media: drivers: media: remove duplicate includes

These duplicate includes have been found with scripts/checkincludes.pl but
they have been removed manually to avoid removing false positives.

Signed-off-by: Pravin Shedge <pravin.shedge4linux@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

drivers/media/platform/pxa_camera.c

@@ -32,7 +32,6 @@
 #include <linux/sched.h>
 #include <linux/slab.h>
 #include <linux/dmaengine.h>
-#include <linux/dma-mapping.h>
 #include <linux/dma/pxa-dma.h>
 
 #include <media/v4l2-async.h>