Delete deprecated Hacking in tox.ini
Delete deprecated Hacking in tox.ini

Some hacking have been removed,so we can delete them.
More details:
     https://github.com/openstack-dev/hacking/blob/master/setup.cfg

Change-Id: I27d59c588a200f4b12f3eee9e5400febe296d6e1

os-cloud/openstack-ansible-pip_install,os-cloud/openstack-ansible-pip_install,openstack/openstack-ansible-pip_install,openstack/openstack-ansible-pip_install