Remove property issue on postgres

[PicoCreator]

This is related to the mongodb issue reported, which was fixed and merged here

#41

It was merged anyway, because this is actually the new test suite detecting an existing issue. (rather then a regression)

Error messages here:

https://github.com/picoded/JavaCommons-dstack/actions/runs/3682659016/jobs/6230472730
https://github.com/picoded/JavaCommons-dstack/actions/runs/3682659018/jobs/6230472581

So yea, need to fix (not urgent)