remove dahlonega's configuration

Reference: /n/atom/patch/applied/nodahlonega
Date: Wed Apr 16 04:08:27 CES 2014
Signed-off-by: quanstro@quanstro.net

# rm /sys/src/fs/dahlonega/conf
# rm /sys/src/fs/dahlonega/dahlonega.c
# rm /sys/src/fs/dahlonega/dat.h
# rm /sys/src/fs/dahlonega/devtab.c
# rm /sys/src/fs/dahlonega/etherctlr.c
# rm /sys/src/fs/dahlonega/mkfile
# rm /sys/src/fs/dahlonega/sizes.c