tests: remove locked object from non owner node

[evgeniiz321]

@carpawell this is a scenario from #895 (comment), but it doesn't reproduce the original problem on 0.43.0. Nevertheless, the scenario is worth to add in any case. But for the #895 I need some help.

[carpawell]

OK, i understood the reason: relay works and worked only for signed objects: https://github.com/nspcc-dev/neofs-node/blob/edc95f6a729d29d9fdaf6a54f4dfa5bc4d3b9c3c/pkg/services/object/put/streamer.go#L72-L73. Tombstone and any other non-regular object are ready and signed but, of course, they do not go through the relay process as it is turned off. So basically we are stuck here cause no easy public functionality for pushing already signed objects (too often we are thinking of nspcc-dev/neofs-node#952). Why it happened in our test load runs: https://github.com/nspcc-dev/neo-go/blob/e89f9fe2a417c917d40d933c1b6a5f92804d6e2d/cli/util/upload_bin.go#L597-L600, still surprised why you went this way but that is how uploader sends prepared and signed objects. It is really not a critical case as I do not know who else is going to upload objects this way (and also we have fixed it just no auto test for now).
cc @roman-khimov

[evgeniiz321]

@roman-khimov i would merge this PR, the test is valid and checks some interesting scenario. It doesn't validate #895, but still a good test case to have. For #895 we will create a new test.

[carpawell]

Agree as long as it does not close the issue.