Remove old and unused restrict_roles.json file
Remove old and unused restrict_roles.json file

This file is not used anymore and uses old syntax. We have
restrict_roles2.json with the current syntax in tree.

Change-Id: I84c73e334b27dd9d71d04cd2ae9f38391dcadda8

potsmaster/openstack-manuals,AlekhyaMallina-Vedams/openstack-manuals,openstack/openstack-manuals,AlekhyaMallina-Vedams/openstack-manuals,AlekhyaMallina-Vedams/openstack-manuals,Akasurde/openstack-manuals,saeki-masaki/openstack-manuals,openstack/openstack-manuals,kairoaraujo/openstack-manuals,kairoaraujo/openstack-manuals,Akasurde/openstack-manuals,potsmaster/openstack-manuals,openstack/openstack-manuals,openstack/openstack-manuals,saeki-masaki/openstack-manuals