Reconsider init code in neofs-adm

[carpawell]

Is your feature request related to a problem? Please describe.

I'm always frustrated when we need to support code that is not used. TBW, I am unsure when it worked last time and if it feels good at all. IR deploys a network on its own even in our stands, devenv, and testcases.

Describe the solution you'd like

I would just drop it cause I do not see any use cases when it can work out.

Describe alternatives you've considered

Refactor it a little and make it easier to support. Think about when this code can be used and change it accordingly. As I understand @roman-khimov has something to add to this paragraph.

Additional context

It uses neo-go a lot and every time we need to update neo-go, this is a huge code part that we need to take care of. I prefer to see and support neo-go in the contracts repo (deploy code) and in the morph pkgs only.