drm/panel-elida-kd35t133: Drop shutdown logic

The driver shutdown is duplicate as it calls drm_unprepare and
drm_disable which are called anyway when associated drivers are
shutdown/removed.
Signed-off-by: Chris Morgan <macromorgan@hotmail.com>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://lore.kernel.org/r/20231117194405.1386265-5-macroalpha82@gmail.comSigned-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20231117194405.1386265-5-macroalpha82@gmail.com

drivers/gpu/drm/panel/panel-elida-kd35t133.c

@@ -296,27 +296,11 @@ static int kd35t133_probe(struct mipi_dsi_device *dsi)
 	return 0;
 }
 
-static void kd35t133_shutdown(struct mipi_dsi_device *dsi)
-{
-	struct kd35t133 *ctx = mipi_dsi_get_drvdata(dsi);
-	int ret;
-
-	ret = drm_panel_unprepare(&ctx->panel);
-	if (ret < 0)
-		dev_err(&dsi->dev, "Failed to unprepare panel: %d\n", ret);
-
-	ret = drm_panel_disable(&ctx->panel);
-	if (ret < 0)
-		dev_err(&dsi->dev, "Failed to disable panel: %d\n", ret);
-}
-
 static void kd35t133_remove(struct mipi_dsi_device *dsi)
 {
 	struct kd35t133 *ctx = mipi_dsi_get_drvdata(dsi);
 	int ret;
 
-	kd35t133_shutdown(dsi);
-
 	ret = mipi_dsi_detach(dsi);
 	if (ret < 0)
 		dev_err(&dsi->dev, "Failed to detach from DSI host: %d\n", ret);
@@ -337,7 +321,6 @@ static struct mipi_dsi_driver kd35t133_driver = {
 	},
 	.probe	= kd35t133_probe,
 	.remove = kd35t133_remove,
-	.shutdown = kd35t133_shutdown,
 };
 module_mipi_dsi_driver(kd35t133_driver);