drm/bridge: lontium-lt9611: drop atomic_check() callback

As drm_bridge_connector now provides atomic_check() implementation which
calls drm_atomic_helper_connector_hdmi_check(), drop the duplicating
callback from the bridge driver.

Acked-by: Maxime Ripard <mripard@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20241210-bridge_hdmi_check-v1-3-a8fdd8c5afa5@linaro.org
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>

drivers/gpu/drm/bridge/lontium-lt9611.c

@@ -767,15 +767,6 @@ static enum drm_mode_status lt9611_bridge_mode_valid(struct drm_bridge *bridge,
 	return MODE_OK;
 }
 
-static int lt9611_bridge_atomic_check(struct drm_bridge *bridge,
-				      struct drm_bridge_state *bridge_state,
-				      struct drm_crtc_state *crtc_state,
-				      struct drm_connector_state *conn_state)
-{
-	return drm_atomic_helper_connector_hdmi_check(conn_state->connector,
-						      conn_state->state);
-}
-
 static void lt9611_bridge_atomic_pre_enable(struct drm_bridge *bridge,
 					    struct drm_bridge_state *old_bridge_state)
 {
@@ -947,7 +938,6 @@ static const struct drm_bridge_funcs lt9611_bridge_funcs = {
 	.edid_read = lt9611_bridge_edid_read,
 	.hpd_enable = lt9611_bridge_hpd_enable,
 
-	.atomic_check = lt9611_bridge_atomic_check,
 	.atomic_pre_enable = lt9611_bridge_atomic_pre_enable,
 	.atomic_enable = lt9611_bridge_atomic_enable,
 	.atomic_disable = lt9611_bridge_atomic_disable,