old content and commented-out code makes noise

[yegor256]

In some files (for example, dataization.yaml and new.yaml), there are some lines of code that are commented out for some reason. We don't understand the reason and I'm sure nobody will, in, say a few years. Please, remove all lines that are commented out or turn them into proper TODO markers (preferably understood by PDD bot).

Also, there are some files that may be removed (like yegor.yaml). They are in the repository for historical reasons, but that's what Git history is for. No need to keep them in the repo, they only make it harder to understand the code base.

[yegor256]

@deemp @fizruk please, pay attention to this

[fizruk]

Thanks for pointing this out!