Delete unused ( maybe? ) columns in posts table

[Morantron]

I'm not 100% sure, but i think this columns here are unused? ( at least permanent and joinable )

timeoverflow/db/schema.rb

Lines 144 to 146 in 857643c

	t.boolean "permanent"
	t.boolean "joinable"
	t.boolean "global"

[enricostano]

4f56c82#diff-df2014f8b8976aed72db66eccb63e298R4

[Morantron]

that commit is from 2013, no? have you git pulled recently?

[sseerrggii]

I am pretty sure we don't use this fields

[markets]

Fixed by #492 🔪 🔪 🔪