:art: Deactivate MessageRegistry on deactivate
:art: Deactivate MessageRegistry on deactivate

elkeis/linter,blakeembrey/linter,Arcanemagus/linter,AtomLinter/Linter,steelbrain/linter,shawninder/linter,JohnMurga/linter,kaeluka/linter,UltCombo/linter,levity/linter,mdgriffith/linter,DanPurdy/linter,e-jigsaw/Linter,AsaAyers/linter,atom-community/linter