setup/setup.sh: remove

According to Jeff, it's not used anymore.

Signed-off-by: Mario Domenech Goulart <mario@ossystems.com.br>
python-demo: whitespace cleanup

Signed-off-by: Mario Domenech Goulart <mario@ossystems.com.br>
python-demo: use $ROOT_HOME instead of hardcoded /home/root

Signed-off-by: Mario Domenech Goulart <mario@ossystems.com.br>
netbase: net-setup.sh: use sh instead of bash

The script doesn't seem to contain any bashism, so it's probably safe
to use sh there.

Explicitly using bash would require it to be in the recipe's RDEPENDS,
but since the script looks portable, we'd better just use sh.

Signed-off-by: Mario Domenech Goulart <mario@ossystems.com.br>