gpu: ipu-v3: Remove unused ipu_vdi_unsetup

ipu_vdi_unsetup() was added in 2016 by
commit 2d2ead453077 ("gpu: ipu-v3: Add Video Deinterlacer unit")
but has remained unused.

Remove it.

Signed-off-by: Dr. David Alan Gilbert <[e-mail]>
Reviewed-by: Dmitry Baryshkov <[e-mail]>
Link: https://patchwork.freedesktop.org/patch/msgid/[e-mail]
Signed-off-by: Dmitry Baryshkov <[e-mail]>

drivers/gpu/ipu-v3/ipu-vdi.c

···
 }
 EXPORT_SYMBOL_GPL(ipu_vdi_setup);
 
-void ipu_vdi_unsetup(struct ipu_vdi *vdi)
-{
-	unsigned long flags;
-
-	spin_lock_irqsave(&vdi->lock, flags);
-	ipu_vdi_write(vdi, 0, VDI_FSIZE);
-	ipu_vdi_write(vdi, 0, VDI_C);
-	spin_unlock_irqrestore(&vdi->lock, flags);
-}
-EXPORT_SYMBOL_GPL(ipu_vdi_unsetup);
-
 int ipu_vdi_enable(struct ipu_vdi *vdi)
 {
 	unsigned long flags;

include/video/imx-ipu-v3.h

···
 void ipu_vdi_set_field_order(struct ipu_vdi *vdi, v4l2_std_id std, u32 field);
 void ipu_vdi_set_motion(struct ipu_vdi *vdi, enum ipu_motion_sel motion_sel);
 void ipu_vdi_setup(struct ipu_vdi *vdi, u32 code, int xres, int yres);
-void ipu_vdi_unsetup(struct ipu_vdi *vdi);
 int ipu_vdi_enable(struct ipu_vdi *vdi);
 int ipu_vdi_disable(struct ipu_vdi *vdi);
 struct ipu_vdi *ipu_vdi_get(struct ipu_soc *ipu);