rc man: Drop helper command
rc man: Drop helper command

The mappings declaration code is not necessarily more readable and
the resulting command is shorter by a single flag.

casimir/kakoune,casimir/kakoune,mawww/kakoune,jkonecny12/kakoune,casimir/kakoune,jkonecny12/kakoune,jkonecny12/kakoune,casimir/kakoune,mawww/kakoune,mawww/kakoune,jkonecny12/kakoune,mawww/kakoune