Drop Vmdb::Logging now that we're out of the Rails app.
Drop Vmdb::Logging now that we're out of the Rails app.

https://trello.com/c/aLn9eAj1

Related PRs:
https://github.com/ManageIQ/manageiq/pull/3676 [this branch]
https://github.com/ManageIQ/manageiq-appliance/pull/9
https://github.com/ManageIQ/manageiq-appliance-build/pull/19

aljesusg/manageiq-gems-pending,rsevilla87/manageiq-gems-pending,rsevilla87/manageiq-gems-pending,aljesusg/manageiq-gems-pending