bug(#3698): Remove object versioning

[maxonfjvipon]

Closes: #3698

[maxonfjvipon]

@yegor256 please check

[yegor256]

@maxonfjvipon why removing all integration tests for maven plugin??

[maxonfjvipon]

@yegor256

1. they are already disabled for a long time (almost a year) and everything works fine

2. some of them are not relevant anymore, for example rewritten_sources or hash_package_layer
3. some of them are already implemented as unit tests
4. we have Jaxec now, so if something goes wrong in the future - we can use it instead

I don't see any reason to keep them anymore

[yegor256]

@maxonfjvipon well, it's a good practice (and a very very common practice) to use invoker for Maven plugin testing. It's just something people always do in Maven world. I suggest keeping one of them in place (fibonacci, for example) and getting rid of all others. WDYT?

[maxonfjvipon]

@yegor256 please check one more time, I fixed fibonacci integration test and enabled it

[yegor256]

@maxonfjvipon perfect, thanks!