Remove emoji and terminal from translations

Handled via po. Remove now empty files. The match with resources.rs
shows that some of them weren't even used (e.g. fa-IR) showing why a
switch to po is useful (which allows to maintain us that outside of
code).

data/langs/fur-IT.txt

@@ -13,6 +13,5 @@ no Norvegjês
 pl Polac
 ru Rus
 se Svedês
-terminal Terminâl
 ua Ucrain
 us American (USA)