emacs: don't call merlin in the lighter
emacs: don't call merlin in the lighter

dra27/merlin,haselwarter/merlin,fxfactorial/merlin,haselwarter/merlin,haselwarter/merlin,ocaml/merlin,neojski/merlin,rgrinberg/merlin,chambart/merlin,the-lambda-church/merlin,ocaml/merlin,fxfactorial/merlin,neojski/merlin,rgrinberg/merlin,neojski/merlin,chambart/merlin,dra27/merlin,chriskonstad/merlin,fxfactorial/merlin,the-lambda-church/merlin,ocaml/merlin,dra27/merlin,the-lambda-church/merlin,chambart/merlin,fxfactorial/merlin,chriskonstad/merlin,dra27/merlin,ocaml/merlin,neojski/merlin,chambart/merlin,rgrinberg/merlin,haselwarter/merlin,rgrinberg/merlin