Rewrite all downloadable csv and xlsx YAMLS to take only low income and not higher ed

[BethMattern]

All of the downloadable file configs use the low income, low higher ed formulation of our variables. We need to change these all to match 1.0

[BethMattern]

@esfoobar-usds @emma-nechamkin who should this be assigned to?

[emma-nechamkin]

please not me 🙏

[esfoobar-usds]

I'll take it but I'll ask @emma-nechamkin which are the right ones?

[emma-nechamkin]

Well I think this is actually not going to be necessary with the refactor, thinking this through? Because we aren't going to use the configs anymore I thought?

[esfoobar-usds]

Right, but I don't know if we'll have that for 1.0

[emma-nechamkin]

Ahhh I see. I can take it then

[emma-nechamkin]

This is done.