Remove cargo unleash CI job (#10482)

* Remove cargo unleash CI job

The CI job is currently breaking, because we released some crates. We also don't need the job
currently because releases are not done. So, the job currently just annoys people and eats CPU time.
This brings us to the conclusion that this job is currently not required and can be readded at a
later point when we are sure that we need it.

* Hopefully fix UI test

* Another try

* Remove `reserved_keyword` ui