Remove music-suite dependency

Instead of using hint to interpret music code, use the new wrappers
music2ly etc included in music-preludes. This solution is simpler,
and allow us to recompile the suite without having to reinstall transf.

(I want to rethink doc-generation in the music suite in General.
Maybe we should skip transf and use something like Brent Yorgey's
diagrams-builder or BlogLiterally?)

See music-suite/music-score#230