Hi,

while looking into LXD dependancies packaging (see #768073), I noticed
that:
- the upstream code of golang-github-tendermint-log15-dev is a fork of
  github.com/inconshreveable/log15 (we need this for lxd, and I'm about
  to use almost exactly the same description etc) - maybe it should be
  mentioned in the description to explain 2 very similar packages?
- this package seems to be here solely as a dependancy for abci, but
  it's marked as deprecated upstream: the recent versions of abci don't
  actually need it. So maybe it would be best to update abci an just
  remove this one.