drm/i915: Remove crtc_mode_set() hook

There's no users left after the conversion to calculate clocks before
disabling crtcs during mode set.
Signed-off-by: NAnder Conselvan de Oliveira <ander.conselvan.de.oliveira@intel.com>
Signed-off-by: NDaniel Vetter <daniel.vetter@ffwll.ch>

drivers/gpu/drm/i915/i915_drv.h

@@ -487,9 +487,6 @@ struct drm_i915_display_funcs {
 	void (*get_plane_config)(struct intel_crtc *,
 				 struct intel_plane_config *);
 	int (*crtc_compute_clock)(struct intel_crtc *crtc);
-	int (*crtc_mode_set)(struct intel_crtc *crtc,
-			     int x, int y,
-			     struct drm_framebuffer *old_fb);
 	void (*crtc_enable)(struct drm_crtc *crtc);
 	void (*crtc_disable)(struct drm_crtc *crtc);
 	void (*off)(struct drm_crtc *crtc);

drivers/gpu/drm/i915/intel_display.c

@@ -10882,13 +10882,6 @@ static int __intel_set_mode(struct drm_crtc *crtc,
 		crtc->primary->fb = fb;
 		crtc->x = x;
 		crtc->y = y;
-
-		if (dev_priv->display.crtc_mode_set) {
-			ret = dev_priv->display.crtc_mode_set(intel_crtc,
-							      x, y, fb);
-			if (ret)
-				goto done;
-		}
 	}
 
 	/* Now enable the clocks, plane, pipe, and connectors that we set up. */