Fix getPlayerInfo again

[Regalijan]

There are three issues which this solves

• The returned response/value object was never an array to begin with and that finally stopped working at some point that I can't figure out (which is now made moot by the fact that we no longer return response objects since Split getPlayerInfo into smaller methods #840)
• We were accessing the .body property on the body itself since that change and I forgot to change that beforehand.
• We would throw User does not exist regardless of what the true error was, now the error(s) is actually logged.

EDIT: Also drops getUsernameHistory so people don't get ratelimited all the time.

[Neztore]

This code isn't usable at present -we need to find the source of the 429s. If we need to drop functionality so be it