The golang-github-hawkular-hawkular-client-go package was last uploaded
on 2020-01-10 and appears unmaintained.  It has no reverse dependencies
in Debian.

https://tracker.debian.org/pkg/golang-github-hawkular-hawkular-client-go

The upstream project has been archived:

https://github.com/hawkular/hawkular-client-go

This removal request is part of a larger batch to remove 100+ unused
golang-*-dev packages from Debian.  I believe the QA cost associated
with keeping all of them is larger than the cost of (hopefully extremely
rare) re-introduction of any accidentally removed package if there is
ever any future need for it.  Meanwhile, I don't think it is useful to
keep this package in Debian.

/Simon