(maint) tag-release: drop vestigial ./version fille
(maint) tag-release: drop vestigial ./version fille

The other puppet tools have never been adjusted to use this file, so
we dropped it for the time being a while ago.

puppetlabs/puppetdb,puppetlabs/puppetdb,puppetlabs/puppetdb,puppetlabs/puppetdb,puppetlabs/puppetdb