python-xattr: Removal of addon

python-xattr: Removal of addon

- Update of attr causes current version of python-xattr to fail to build
- Following input from Michael Tremer
- This package was orihinally required for pakfire 3 which no longer depends on it
- This is a python 2 module. Python 2 is EOL
- lfs and rootfile removed from IPFire
- make.sh updated to remove python-xattr entry

Signed-off-by: Adolf Belka <adolf.belka@ipfire.org>
Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>