setup: stop inheriting from 'clean' command
setup: stop inheriting from 'clean' command

The default 'clean' command impl deletes only intermediate files from
the 'build' directory. We've overridden it to delete everything. There
is no benefit in inheriting from the default impl, given our subclass
will delete everything.

Signed-off-by: Daniel P. Berrangé <bb938cf255e055ff3507f2627d214e8e62118fcf@redhat.com>

libvirt/libvirt-python,libvirt/libvirt-python,libvirt/libvirt-python