Unusable languages

[Hirschfuchs]

As already established in #69, some languages are not supported by the default font. The remains of the tests in those languages have still be integrated by accident. This issue can be solved in one of these ways:

• remove the unsupported languages
• add a supporting font

I would prefer the second way.

[Hirschfuchs]

After an intense search and multiple tries, I cannot get fallback fonts to work in Iced. For now, those unsupported languages get removed.