Remove da_DK/MAT.mo

I like to have all danish translations inside this folder:
/usr/share/locale/da/

But right now (Tails 3.12) there is also a single file inside:
/usr/share/locale/da_DK/

Which is MAT.mo

Which seems to contain no translated strings. Just the header.

I belive i already contacted the MAT developer to have the “da_DK” removed and only use “da” but i think the software (MAT) is no longer maintained.

Anyway i would like for this file to be deleted:
/usr/share/locale/da_DK/MAT.mo

So the da_DK/ folder is not there.
The MAT.mo file is also inside /usr/share/locale/da/MAT.mo where is does contain translated strings. So keep that.

Seems like alot of the MAT.mo files for other languages are also empty. Just the header.

Tails 3.12.

Original created by @scootergrisen on 16443 (Redmine)