media: atomisp: Remove empty atomisp_css_set_cont_prev_start_time() function

atomisp_css_set_cont_prev_start_time() is a no-op, remove it.
Reviewed-by: Andy Shevchenko <andriy.shevchenko@intel.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>

drivers/staging/media/atomisp/pci/atomisp_compat.h

@@ -434,9 +434,6 @@ void atomisp_css_get_morph_table(struct atomisp_sub_device *asd,
 
 void atomisp_css_morph_table_free(struct ia_css_morph_table *table);
 
-void atomisp_css_set_cont_prev_start_time(struct atomisp_device *isp,
-	unsigned int overlap);
-
 int atomisp_css_get_dis_stat(struct atomisp_sub_device *asd,
 			     struct atomisp_dis_statistics *stats);
 

drivers/staging/media/atomisp/pci/atomisp_compat_css20.c

@@ -3763,14 +3763,6 @@ void atomisp_css_morph_table_free(struct ia_css_morph_table *table)
 	ia_css_morph_table_free(table);
 }
 
-void atomisp_css_set_cont_prev_start_time(struct atomisp_device *isp,
-	unsigned int overlap)
-{
-	/* CSS 2.0 doesn't support this API. */
-	dev_dbg(isp->dev, "set cont prev start time is not supported.\n");
-	return;
-}
-
 static struct atomisp_sub_device *__get_atomisp_subdev(
     struct ia_css_pipe *css_pipe,
     struct atomisp_device *isp,

drivers/staging/media/atomisp/pci/atomisp_internal.h

@@ -105,9 +105,6 @@
 #define ATOMISP_DELAYED_INIT_QUEUED	1
 #define ATOMISP_DELAYED_INIT_DONE	2
 
-#define ATOMISP_CALC_CSS_PREV_OVERLAP(lines) \
-	((lines) * 38 / 100 & 0xfffffe)
-
 /*
  * Define how fast CPU should be able to serve ISP interrupts.
  * The bigger the value, the higher risk that the ISP is not

drivers/staging/media/atomisp/pci/atomisp_ioctl.c

@@ -1934,8 +1934,6 @@ static int atomisp_streamon(struct file *file, void *fh,
 		reinit_completion(&asd->init_done);
 		asd->delayed_init = ATOMISP_DELAYED_INIT_QUEUED;
 		queue_work(asd->delayed_init_workq, &asd->delayed_init_work);
-		atomisp_css_set_cont_prev_start_time(isp,
-						     ATOMISP_CALC_CSS_PREV_OVERLAP(sink->height));
 	} else {
 		asd->delayed_init = ATOMISP_DELAYED_INIT_NOT_QUEUED;
 	}