drm/tilcdc: panel: Remove unused variable

Just a trivial cleanup to remove the variable.
Tested-by: NDarren Etheridge <detheridge@ti.com>
Tested-by: NJohannes Pointner <johannes.pointner@br-automation.com>
Signed-off-by: NEzequiel Garcia <ezequiel@vanguardiasur.com.ar>
Signed-off-by: NDave Airlie <airlied@redhat.com>

drivers/gpu/drm/tilcdc/tilcdc_panel.c

@@ -340,8 +340,6 @@ static struct tilcdc_panel_info *of_get_panel_info(struct device_node *np)
 	return info;
 }
 
-static struct of_device_id panel_of_match[];
-
 static int panel_probe(struct platform_device *pdev)
 {
 	struct device_node *node = pdev->dev.of_node;