ARM: 7904/1: input: ambakmi: Remove unnecessary amba_set_drvdata()

Driver core clears the driver data to NULL after device_release
or on probe failure, so just remove it from here.

Driver core change:
"device-core: Ensure drvdata = NULL when no driver is bound"
(sha1: 0998d063)
Signed-off-by: NMichal Simek <michal.simek@xilinx.com>
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>

drivers/input/serio/ambakmi.c

@@ -167,8 +167,6 @@ static int amba_kmi_remove(struct amba_device *dev)
 {
 	struct amba_kmi_port *kmi = amba_get_drvdata(dev);
 
-	amba_set_drvdata(dev, NULL);
-
 	serio_unregister_port(kmi->io);
 	clk_put(kmi->clk);
 	iounmap(kmi->base);