Refactoring: Get rid of "WrapperForMaskInputTextBlakeks"

[S-Man42]

It was originally used to create a "mask input", e.g. for the textfields like playfair crypto input or enigma plugboard. The mask adds the space after every two characters which is very useful.

Meanwhile it is used for many non-masked textfields instead of a simple TextInputFormatter

a) Check if there's an alternative b) If not, at least remove it everywhere, where a mask is not necessary and a normal TextInputFormatter could be taken.