disp: msm: sde: remove all preclose logic

The DRM framework only calls the driver's preclose callback
function if the LEGACY driver feature is enabled. Therefore
strip out this logic as it never gets executed since LEGACY
is not supported for msm_drm driver.

Change-Id: I95474cd5424423ef194faae12f1241698f3e467e
Signed-off-by: Steve Cohen <cohens@codeaurora.org>

msm/msm_drv.c

@@ -907,15 +907,6 @@ static void context_close(struct msm_file_private *ctx)
 	kfree(ctx);
 }
 
-static void msm_preclose(struct drm_device *dev, struct drm_file *file)
-{
-	struct msm_drm_private *priv = dev->dev_private;
-	struct msm_kms *kms = priv->kms;
-
-	if (kms && kms->funcs && kms->funcs->preclose)
-		kms->funcs->preclose(kms, file);
-}
-
 static void msm_postclose(struct drm_device *dev, struct drm_file *file)
 {
 	struct msm_drm_private *priv = dev->dev_private;
@@ -1564,7 +1555,6 @@ static struct drm_driver msm_driver = {
 				DRIVER_ATOMIC |
 				DRIVER_MODESET,
 	.open               = msm_open,
-	.preclose           = msm_preclose,
 	.postclose          = msm_postclose,
 	.lastclose          = msm_lastclose,
 	.irq_handler        = msm_irq,