Remove bcgovpubcode entries from DB if it is removed from repo.

[mishraomp]

Currently for the entries if it is removed from the repo itself, it is not removed from our DB, may be mark them as deleted in the repo and not show them to the end users.

[mishraomp]

bcgov/bcbox@master...bcgov:bcstats-lockbox:master#diff-9cd138f0e6495be387d57439249c45d8dd36fcd634484dcf3991b4dc61de26b5

[mishraomp]

thanks to @slhurley for reporting the issue.