[ops-guide] cleanup unnecessary strings
[ops-guide] cleanup unnecessary strings

Change-Id: If6cd83bab1b00011f39b57acec616279ba602792

openstack/openstack-manuals,AlekhyaMallina-Vedams/openstack-manuals,AlekhyaMallina-Vedams/openstack-manuals,openstack/openstack-manuals,AlekhyaMallina-Vedams/openstack-manuals,openstack/openstack-manuals,openstack/openstack-manuals