sudo gainroot
mount /home/ /and
apt-get --purge --auto-remove remove nitdroid-kernel-2.6.28-(07or 06)
(after that operation you get "device resorce busy bla,bla" it's normal because you delete kernel,which needed to boot droid from /and
don't worry)
cd ..
remove with rm -rf every folder,with the exception of these folders "opt,user,and,lost+found"
cd /home/user/MyDocs
umount /and
rm -rf /and
cd /home
ls -a
checked if left eventually for folder "and" sometimes is happen
then removed it
This is which I use when installed droid on emmc,but under NITdroid autoinstaller,I don't know but probably is the same method