drivers/leds/leds-tca6507.c: remove obsolete cleanup for clientdata

A few new i2c-drivers came into the kernel which clear the
clientdata-pointer on exit or error. This is obsolete meanwhile, the
core will do it.

Signed-off-by: Wolfram Sang <[e-mail]>
Cc: NeilBrown <[e-mail]>
Cc: Richard Purdie <[e-mail]>
Signed-off-by: Andrew Morton <[e-mail]>
Signed-off-by: Linus Torvalds <[e-mail]>

drivers/leds/leds-tca6507.c

···
 	}
 	tca6507_remove_gpio(tca);
 	cancel_work_sync(&tca->work);
-	i2c_set_clientdata(client, NULL);
 	kfree(tca);
 
 	return 0;