As mentioned in T61136.
The problem is that this option does not have an impact for the user.
The selected value is never actually used/it is overwritten immediatly.
There are three possibilities:
- Only remove the option from the UI.
- Remove it from RNA and UI.
- Remove it from DNA, RNA and UI.
It might make sense to just remove it everywhere because it does not really has a purpose.
Let's just always use Top alignment by default (since it is a "header").
This change shouldn't really impact anyone since this default is never used effectively.