common: removed Debian specific notes in "Compute"
common: removed Debian specific notes in "Compute"

It has been established that the notes are not in
the right place

Change-Id: I4dd4cbd21f07670a265f7d44f9bfd84607aa2738
Closes-Bug: #1503940

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