Kirkwood: NAS220: remove bootdelay from CONFIG_EXTRA_ENV_SETTINGS

The default bootdelay of 3 seconds is good enough and there is no need
to duplicate it in CONFIG_EXTRA_ENV_SETTINGS.

Signed-off-by: Evgeni Dobrev <evgeni@studio-punkt.com>
Signed-off-by: Stefan Roese <sr@denx.de>

include/configs/nas220.h

@@ -69,7 +69,6 @@
 	"0x500000@0xc0000(uimage),"\
 	"0x1a40000@0x5c0000(rootfs)\0" \
 	"mtdids=nand0=orion_nand\0"\
-	"bootdelay=-1\0"\
 	"autostart=no\0"\
 	"autoload=no\0"