drm: omapdrm: Planes are already disabled when destroyed

Planes are destroyed after framebuffers, which has the side effect of
disabling all planes. There is thus no need to disable planes explicitly
when destroying them.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>

drivers/gpu/drm/omapdrm/omap_plane.c

@@ -268,7 +268,6 @@ static void omap_plane_destroy(struct drm_plane *plane)
 
 	omap_irq_unregister(plane->dev, &omap_plane->error_irq);
 
-	omap_plane_disable(plane);
 	drm_plane_cleanup(plane);
 
 	drm_flip_work_cleanup(&omap_plane->unpin_work);