USB: ohci-spear: remove unnecessary platform_set_drvdata()

The driver core clears the driver data to NULL after device_release
or on probe failure, since commit 0998d06310
(device-core: Ensure drvdata = NULL when no driver is bound).
Thus, it is not needed to manually clear the device driver data to NULL.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/usb/host/ohci-spear.c

@@ -179,8 +179,6 @@ static int spear_ohci_hcd_drv_remove(struct platform_device *pdev)
 		spear_stop_ohci(ohci_p);
 
 	usb_put_hcd(hcd);
-
-	platform_set_drvdata(pdev, NULL);
 	return 0;
 }