[pkg-go] golang-github-robfig-cron is marked for autoremoval from testing

[Debian testing autoremoval watch]

golang-github-robfig-cron 1-1 is marked for autoremoval from testing on 2017-01-28

It is affected by these RC bugs:
839433: golang-github-robfig-cron: FTBFS: dh_auto_test: go test -v -p 1 github.com/robfig/cron returned exit code 1