Remove the unused coding style modules
Remove the unused coding style modules

Python modules related to coding style checks (listed in blacklist.txt in
openstack/requirements repo) are dropped from lower-constraints.txt
they are not needed during installation.

Change-Id: I3be1bf801a386052e42c070c0710680f2f8d2a19

stackforge/python-blazarclient,ChameleonCloud/python-blazarclient,openstack/python-blazarclient