media: davinci: get rid of an unused function

vpif_get_default_field() seems to be some left-over from a
past code that sets the field order.
Reviewed-by: Nathan Chancellor <nathan@kernel.org>
Reviewed-by: Lad Prabhakar <prabhakar.csengg@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

drivers/media/platform/davinci/vpif_capture.c

@@ -618,17 +618,6 @@ static void vpif_calculate_offsets(struct channel_obj *ch)
 	ch->vpifparams.video_params.stdid = vpifparams->std_info.stdid;
 }
 
-/**
- * vpif_get_default_field() - Get default field type based on interface
- * @iface: ptr to vpif interface
- */
-static inline enum v4l2_field vpif_get_default_field(
-				struct vpif_interface *iface)
-{
-	return (iface->if_type == VPIF_IF_RAW_BAYER) ? V4L2_FIELD_NONE :
-						V4L2_FIELD_INTERLACED;
-}
-
 /**
  * vpif_config_addr() - function to configure buffer address in vpif
  * @ch: channel ptr