drm/qxl: drop unused mode private pointer

This was pointless, forgot to remove the code.
Signed-off-by: Dave Airlie <airlied@redhat.com>

drivers/gpu/drm/qxl/qxl_display.c

@@ -592,7 +592,6 @@ static int qxl_crtc_mode_set(struct drm_crtc *crtc,
 {
 	struct drm_device *dev = crtc->dev;
 	struct qxl_device *qdev = dev->dev_private;
-	struct qxl_mode *m = (void *)mode->private;
 	struct qxl_framebuffer *qfb;
 	struct qxl_bo *bo, *old_bo = NULL;
 	struct qxl_crtc *qcrtc = to_qxl_crtc(crtc);
@@ -610,12 +609,6 @@ static int qxl_crtc_mode_set(struct drm_crtc *crtc,
 	}
 	qfb = to_qxl_framebuffer(crtc->primary->fb);
 	bo = gem_to_qxl_bo(qfb->obj);
-	if (!m)
-		/* and do we care? */
-		DRM_DEBUG("%dx%d: not a native mode\n", x, y);
-	else
-		DRM_DEBUG("%dx%d: qxl id %d\n",
-			  mode->hdisplay, mode->vdisplay, m->id);
 	DRM_DEBUG("+%d+%d (%d,%d) => (%d,%d)\n",
 		  x, y,
 		  mode->hdisplay, mode->vdisplay,