i2c: Discard the i2c algo del_bus wrappers

They are all only calling i2c_del_adapter, so we may as well do
it directly.

Signed-off-by: Jean Delvare <khali@linux-fr.org>

drivers/acorn/char/i2c.c

@@ -360,7 +360,7 @@ static int __init i2c_ioc_init(void)
 	if (ret >= 0){
 		ret = misc_register(&rtc_dev);
 		if(ret < 0)
-			i2c_bit_del_bus(&ioc_ops);
+			i2c_del_adapter(&ioc_ops);
 	}
 
 	return ret;