watchdog: omap_wdt: delete redundant platform_set_drvdata() calls

It's not needed to manually reset the driver data.

Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>

drivers/watchdog/omap_wdt.c

@@ -278,7 +278,6 @@ static int omap_wdt_probe(struct platform_device *pdev)
 
 err_register:
 	pm_runtime_disable(wdev->dev);
-	platform_set_drvdata(pdev, NULL);
 
 	return ret;
 }
@@ -304,7 +303,6 @@ static int omap_wdt_remove(struct platform_device *pdev)
 
 	pm_runtime_disable(wdev->dev);
 	watchdog_unregister_device(wdog);
-	platform_set_drvdata(pdev, NULL);
 
 	return 0;
 }