feat: Remove jsonnet-tool checksum command as jsonnet itself has a similar jsonnet-deps
This command was originally introduced in !57 (merged) in order to facilitate caching in gitlab-com/runbooks!5618 (merged).
It turns out however that jsonnet
itself already ships with a very similar jsonnet-deps
command.
That makes the checksum
command obsolete, as we can replace it with:
jsonnet-deps -J . -J ../libsonnet [...] | xargs sha256sum
Thus we are now removing it in favour of what jsonnet
ships with out of the box.