completion: remove printf debugging
completion: remove printf debugging

ocaml/merlin,rgrinberg/merlin,rgrinberg/merlin,ocaml/merlin,dra27/merlin,the-lambda-church/merlin,the-lambda-church/merlin,ocaml/merlin,dra27/merlin,rgrinberg/merlin,the-lambda-church/merlin,ocaml/merlin,dra27/merlin,rgrinberg/merlin,dra27/merlin