[julia mode] Remove some very confused code
[julia mode] Remove some very confused code

Closes #6609

dperetti/CodeMirror,hackmdio/CodeMirror,nightwing/CodeMirror,nightwing/CodeMirror,hackmdio/CodeMirror,pabloferz/CodeMirror,hackmdio/CodeMirror,pabloferz/CodeMirror,pabloferz/CodeMirror,dperetti/CodeMirror,wingify/CodeMirror,wingify/CodeMirror,wingify/CodeMirror,dperetti/CodeMirror,nightwing/CodeMirror