staging: media: omap4iss: Remove unused macro functions

Remove unused macro functions "to_iss_device()", "to_device()",
and "v4l2_dev_to_iss_device(dev)".

Signed-off-by: Aline Santana Cordeiro <alinesantanacordeiro@gmail.com>

drivers/staging/media/omap4iss/iss.h

@@ -29,11 +29,6 @@
 
 struct regmap;
 
-#define to_iss_device(ptr_module)				\
-	container_of(ptr_module, struct iss_device, ptr_module)
-#define to_device(ptr_module)						\
-	(to_iss_device(ptr_module)->dev)
-
 enum iss_mem_resources {
 	OMAP4_ISS_MEM_TOP,
 	OMAP4_ISS_MEM_CSI2_A_REGS1,
@@ -119,9 +114,6 @@ struct iss_device {
 	unsigned int isp_subclk_resources;
 };
 
-#define v4l2_dev_to_iss_device(dev) \
-	container_of(dev, struct iss_device, v4l2_dev)
-
 int omap4iss_get_external_info(struct iss_pipeline *pipe,
 			       struct media_link *link);