Removal of certain Middle Dutch variations

I can conceded that obscure forms should generally be omitted, but I think a) in a period of fluctuating spelling, who's to say which is most correct, and b) making the distinction between a spelling variant and a alternative form can be blurry, and c) spelling variants can illustrate archaic forms echoing the ODut form, or the transition and standardization of MDut to ModDut.

Middle Dutch spelling is normalized per WT:ADUM. The normalisation affects only things that we know are just different ways that the same thing is spelled.

I'll wait for @3liot to reply, as I've said my peace.