[done] Delete Midi Mapping Function Missing

no real bug, but it should be neat to have the abbility to delete midi mappings
if you, for instance, decide to do a certain parameter manual or if you accidentally assigned the wrong parameter.

ok, after reading the new wiki manual, I see it’s possible to delete midi-mapping by simply click on the right mouse button in the dsp box and then init the mappings.

it’s not possible to delete just one mapping, but this makes it much better.

maybe it’s cool to have delete buttons behind the mappings shown in the ‘used midi-mapping list’

Renoise b5 saves the day!