Revert "Inject gerrit-doc.properties for gate-{name}-tox-doc-publish-{envlist}"

This reverts commit 7ce9a98ce271cf19b7c9b28130d76abdc00bf96b.

This breaks all gate job, see http://logs.openstack.org/24/93124/1/check/gate-openstack-manuals-tox-doc-publish-checkbuild/7c11a50

Change-Id: I1cb4766ea5ae628276739564af4afd785dc6d869
Merge "Revert "Inject gerrit-doc.properties for gate-{name}-tox-doc-publish-{envlist}""